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You searched for: Publication year rev 7981-2019 Remove constraint Publication year rev: 7981-2019 Subject arsenic Remove constraint Subject: arsenic
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1. (2S)-5,6,7,3',4'-pentamethoxyflavanone, a citrus polymethoxyflavone ameliorates arsenic- and cigarette smoke extract- induced cytotoxicity via activating Nrf2-mediated defense system

Author:
Ming-Xing Zhou; Guo-Hui Li; Xue-Yi Wu; Lin Sun; Yan-Ru Li; Wen-Jing Yang; Dong-Mei Ren; Xiao-Ning Wang; Lan Xiang; Hong-Xiang Lou; Tao Shen
Source:
Journal of functional foods 2019 pp. -
ISSN:
1756-4646
Subject:
Citrus; arsenic; cytotoxicity; enzyme inhibitors; epithelial cells; genes; human diseases; lungs; mitogen-activated protein kinase; oxidative stress; pathogenesis; phosphatidylinositol 3-kinase; polymethoxyflavones; protein kinase C; sodium; toxic substances; ubiquitination
Abstract:
... Exogenous toxicants (e.g. arsenic, cigarette smoke), trigger oxidative stress, and initiate the pathogenesis of many human diseases. Induction of nuclear factor E2-related factor 2 (Nrf2) counteract exogenous toxicant-induced oxidative insults. Using a high-throughput screen, we firstly identified a citrus polymethoxyflavone, (2S)-5,6,7,3',4'-pentamethoxyflavanone (PMF), to be an Nrf2 activator, a ...
DOI:
10.1016/j.jff.2019.01.019

2. Evernia Goes to School: Bioaccumulation of Heavy Metals and Photosynthetic Performance in Lichen Transplants Exposed Indoors and Outdoors in Public and Private Environments

Author:
Luca Paoli; Zuzana Fačkovcová; Anna Guttová; Caterina Maccelli; Katarína Kresáňová; Stefano Loppi
Source:
Plants 2019 v.8 no.5 pp. -
ISSN:
2223-7747
Subject:
Parmeliaceae; air quality; aluminum; antimony; arsenic; autumn; bioaccumulation; buildings; cadmium; calcium; children; chlorophyll; chromium; copper; environmental monitoring; fluorescence; heavy metals; indicator species; iron; lead; lichens; photosynthesis; physiological state; rural areas; schools; urban areas; vanadium; zinc; Slovakia
Abstract:
... Recently indoor air quality (IAQ) has become a key issue, especially in schools, where children spend most of the day. Only in a few cases IAQ was investigated using lichens as biomonitors. During autumn 2017, lichens (Evernia prunastri) were exposed for two months indoors and outdoors in public (schools) and private (dwellings) environments, in both rural and urban areas of Slovakia. The bioaccum ...
DOI:
10.3390/plants8050125
PubMed:
31086106
PubMed Central:
PMC6571755

3. The AKOBEN programme as a tool towards responsible gold mining in Ghana, business as usual or a commitment towards sustainable development

Author:
Kenneth Bedu-Addo; Martha Ofori-Kuragu; Abeiku Arthur
Source:
Heliyon 2019 v.5 no.6 pp. e01925
ISSN:
2405-8440
Subject:
air; aquatic organisms; arsenic; carbon dioxide; compliance; electrical conductivity; environmental assessment; environmental audits; environmental performance; gold; greenhouses; habitats; issues and policy; methylmercury compounds; nitrogen; pH; public health; recreation; rivers; sulfur; sustainable development; time series analysis; toxicity; water quality; Ghana
Abstract:
... The AKOBEN Programme, an environmental performance rating and disclosure initiative that show the environmental performance of gold mining firms with reference to their daily activities post environmental impact assessment and issuance of an environmental permit was introduced in Ghana to serve as a monitoring and verification tool towards environmental compliance and responsible mining. As to whe ...
DOI:
10.1016/j.heliyon.2019.e01925
PubMed:
31304413
PubMed Central:
PMC6603283

4. Abnormal chromosome assessment of snakehead fish (Channa striata) affected by heavy metals from a reservoir near an industrial factory

Author:
Chatpong Khamlerd; Bundit Tengjaroenkul; Lamyai Neeratanaphan
Source:
International journal of environmental studies 2019 v.76 no.4 pp. 648-662
ISSN:
1029-0400
Subject:
Channa striata; arsenic; atomic absorption spectrometry; cadmium; chromium; chromosome number; chromosomes; copper; diploidy; heavy metals; iron; lead; manganese; nickel; sediments; water quality standards; zinc; Thailand
Abstract:
... This study aimed to investigate nine heavy metal concentrations (As, Cd, Cr, Pb, Cu, Fe, Zn, Mn and Ni) in water, sediment and snakehead fish (Channa striata) and to identify abnormal chromosomes in C. striata from a reservoir near an industrial factory and a reference area. Heavy metal concentrations were measured by inductively coupled plasma optical emission spectrometry (ICP-OES). The metal co ...
DOI:
10.1080/00207233.2019.1580033

5. Accumulation and distribution of arsenic and cadmium in winter wheat (Triticum aestivum L.) at different developmental stages

Author:
Gao Ling Shi; Dao Jun Li; Yu Feng Wang; Chang Hao Liu; Zhu Bing Hu; Lai Qing Lou; Zed Rengel; Qing Sheng Cai
Source:
Science of the total environment 2019 v.667 pp. 532-539
ISSN:
0048-9697
Subject:
Triticum aestivum; arsenic; cadmium; cultivars; developmental stages; filling period; food crops; humans; leaves; plant growth; roots; shoots; stems; tillering; toxicity; winter wheat
Abstract:
... Arsenic (As) and cadmium (Cd) are known to be toxic to humans, and elevated concentrations have been documented in food crops worldwide. However, little is known regarding their uptake, translocation, and distribution in wheat plants during plant development. A series of experiments were conducted to investigate the spatial distribution and dynamics of As and Cd in two wheat cultivars (cv. JN12 an ...
DOI:
10.1016/j.scitotenv.2019.02.394

6. Accumulation of Heavy Metals by Amur Bay Sediments (the Sea of Japan) under the Effect of Biochemical Factors

Author:
D. M. Polyakov; A. A. Mar’yash; A. V. Mozherovskii
Source:
Water resources 2019 v.46 no.2 pp. 209-213
ISSN:
0097-8078
Subject:
arsenic; cadmium; chromium; cobalt; copper; heavy metals; humic substances; hydroxides; iron; lead; manganese; molybdenum; nickel; rivers; sediments; sorption; vanadium; zinc; Sea of Japan
Abstract:
... The average concentrations of elements Fe, Mn, Zn, Pb, Cu, Cr, V, Co, Cd, Ni, As, and Mo in the subcolloidal fraction of bottom sediments were determined in the northern and central parts of the Amur Bay. The concentrations of metals Pb, Co, Ni, Zn, Cr, V, and As in bottom sediments subject to direct influence of the Razdol’naya River were shown to increase by 5–17% because of their sorption on Fe ...
DOI:
10.1134/S0097807819020118

7. Accumulation of trace elements in feathers of the Kentish plover Charadrius alexandrinus

Author:
Marco Picone; Fabiana Corami; Carlo Gaetan; Marco Basso; Alberto Battiston; Lucio Panzarin; Annamaria Volpi Ghirardini
Source:
Ecotoxicology and environmental safety 2019 v.179 pp. 62-70
ISSN:
0147-6513
Subject:
Charadrius alexandrinus; arsenic; birds; cadmium; chromium; coasts; cobalt; conservation status; copper; environmental exposure; feathers; lead; littoral zone; mercury; nickel; reproductive success; risk; tail; toxicity; vanadium; zinc
Abstract:
... A non-invasive study of trace element accumulation in tail feathers of the Kentish plover (Charadrius alexandrinus) was performed along the coastline of the northern littoral strip of the Venice Lagoon, with the aim to verify whether contamination may be a factor affecting conservation status of Kentish plover populations.Body burdens in feathers of 11 trace elements including toxic metals/metallo ...
DOI:
10.1016/j.ecoenv.2019.04.051

8. Accumulation of uranium and heavy metals in the soil–plant system in Xiazhuang uranium ore field, Guangdong Province, China

Author:
Zhenghai Wang; Haoyang Qin; Juan Wang
Source:
Environmental geochemistry and health 2019 v.41 no.6 pp. 2413-2423
ISSN:
0269-4042
Subject:
Castanopsis; Liriodendron; Rhus; Sapium; arsenic; cadmium; cobalt; copper; environmental factors; heavy metals; lead; leaves; manganese; mining; molybdenum; nickel; remediation; soil; soil pollution; soil sampling; toxicity; uranium; zinc; China
Abstract:
... Plants that have grown for many years in the special environmental conditions prevailing in mining areas are naturally screened and show strong capacity to adapt to their environment. The present study investigated the enrichment characteristics of U and other heavy metals (As, Cu, Pb, Mn, Mo, Zn, Cd, Co, and Ni) in the soil–plant system in Xiazhuang uranium mine. Four dominant plants (Castanopsis ...
DOI:
10.1007/s10653-019-00286-7

9. Accumulation, ecological-health risks assessment, and source apportionment of heavy metals in paddy soils: A case study in Hanzhong, Shaanxi, China

Author:
Ran Xiao; Di Guo; Amjad Ali; Shenshen Mi; Tao Liu; Chunyan Ren; Ronghua Li; Zengqiang Zhang
Source:
Environmental pollution 2019 v.248 pp. 349-357
ISSN:
0269-7491
Subject:
agricultural soils; arsenic; basins; cadmium; case studies; coal; combustion; copper; ecosystems; environmental health; fertilizers; food security; heavy metals; human health; irrigation water; lead; mercury; paddy soils; pollution; rice; risk; risk assessment; soil sampling; transportation; zinc; China
Abstract:
... Contamination of agricultural soil by heavy metals has become a global issue concerning food security and human health risk. In this study, a soil investigation was conducted to evaluate metals accumulation, potential ecological and health risks as well as to identify sources of metals in paddy soils in Hanzhong City, which is located in a sedimentary basin. Ninety-two (92) surface soil samples (b ...
DOI:
10.1016/j.envpol.2019.02.045

10. Accumulation, temporal variation, source apportionment and risk assessment of heavy metals in agricultural soils from the middle reaches of Fenhe River basin, North China

Author:
Minxia Liu; Zhiqiang Han; Yuyi Yang
Source:
RSC advances 2019 v.9 no.38 pp. 21893-21902
ISSN:
2046-2069
Subject:
adults; agricultural soils; arsenic; cadmium; carcinogenicity; children; chromium; coal; combustion; copper; emissions; farming systems; heavy metals; human health; lead; mercury; neoplasms; nickel; nonpoint source pollution; risk; risk assessment; soil quality; soil sampling; temporal variation; watersheds; zinc; China
Abstract:
... The Fenhe River basin is the main agricultural and industrial developed area in Shanxi province, China. In recent years, agricultural non-point source pollution in the Fenhe River basin intensified, threatening soil quality and safety in the area. Accumulation of eight heavy metals (HMs) including chromium (Cr), nickel (Ni), copper (Cu), zinc (Zn), arsenic (As), cadmium (Cd), lead (Pb) and mercury ...
DOI:
10.1039/c9ra03479j

11. Accumulation, transport and toxicity of arsenic in the Sundarbans mangrove, India

Author:
Sanjay Kumar Mandal; Raghab Ray; Aridane G. González; Oleg S. Pokrovsky; Vasileios Mavromatis; Tapan Kumar Jana
Source:
Geoderma 2019 v.354 pp. 113891
ISSN:
0016-7061
Subject:
advection; anthropogenic activities; arsenic; belowground biomass; bioaccumulation; coasts; dust; ecosystems; ecotoxicology; estuaries; metals; models; plant litter; pollution; sediments; toxicity; Bay of Bengal; India
Abstract:
... Arsenic (As), a toxic element is a concern for the habitants in and around the coastal areas of West Bengal (India) where world's largest Sundarbans mangrove is situated. Little is known about the potential of these mangroves in storing As within their biomass and transporting to the Bay of Bengal. A comprehensive yearly data of above ground and below ground biomass (AGB, BGB), and exchange fluxes ...
DOI:
10.1016/j.geoderma.2019.113891

12. Achieving arsenic concentrations of <1 μg/L by Fe(0) electrolysis: The exceptional performance of magnetite

Author:
C.M. van Genuchten; T. Behrends; S.L.S. Stipp; K. Dideriksen
Source:
Water research 2019 pp. -
ISSN:
0043-1354
Subject:
World Health Organization; X-ray absorption spectroscopy; arsenic; electrocoagulation; electrolysis; magnetite; pH; research; sorption; water; water treatment; water utilities; Netherlands
Abstract:
... Consumption of drinking water containing arsenic at concentrations even below the World Health Organization provisional limit of 10 μg/L can still lead to unacceptable health risks. Consequently, the drinking water sector in the Netherlands has recently agreed to target 1 μg/L of arsenic in treated water. Unfortunately, in many poor, arsenic-affected countries, the costs and complexity of current ...
DOI:
10.1016/j.watres.2019.115170

13. Acid mine drainage affects the diversity and metal resistance gene profile of sediment bacterial community along a river

Author:
Xiaohui Zhang; Song Tang; Mao Wang; Weimin Sun; Yuwei Xie; Hui Peng; Aimin Zhong; Hongling Liu; Xiaowei Zhang; Hongxia Yu; John P. Giesy; Markus Hecker
Source:
Chemosphere 2019 v.217 pp. 790-799
ISSN:
0045-6535
Subject:
Halomonas; Planococcaceae; acid mine drainage; arsenic; bacterial communities; byproducts; cadmium; community structure; copper; high-throughput nucleotide sequencing; lead; lotic systems; metal tolerance; mining; pH; pollution; resistance genes; rivers; salinity; sediments; sulfates
Abstract:
... Acid mine drainage (AMD) is one of the most hazardous byproducts of some types of mining. However, research on how AMD affects the bacterial community structure of downstream riverine ecosystems and the distribution of metal resistance genes (MRGs) along pollution gradient is limited. Comprehensive geochemical and high-throughput next-generation sequencing analyses can be integrated to characteriz ...
DOI:
10.1016/j.chemosphere.2018.10.210

14. Activity of the soil enzymes and moss and lichen biomonitoring method used for the evaluation of soil and air pollution from tailing pond in Nižná Slaná (Slovakia)

Author:
Lenka Demková; Július Árvay; Lenka Bobuľská; Martin Hauptvogl; Miloslav Michalko
Source:
Journal of environmental science and health 2019 v.54 no.6 pp. 495-507
ISSN:
1532-4117
Subject:
air pollution; alkaline phosphatase; arsenic; chromium; copper; environmental monitoring; enzyme activity; iron; lead; lichens; manganese; mosses and liverworts; nickel; pollution load; ponds; risk; soil; soil enzymes; soil pollution; toxic substances; urease; zinc; Slovakia
Abstract:
... The surrounding of the poorly maintained tailing ponds is endangered by the toxic substances and represents a serious risk for the health of the local population. The aim of the study was to determine the soil pollution by the hazardous elements (As, Cr, Cd, Cu, Fe, Mn, Ni, Pb, Zn) around the tailing pond using contamination factor (Cf), degree of contamination (Cd) and pollution load index (PLI). ...
DOI:
10.1080/10934529.2019.1567158

15. Acute lead arsenate poisoning in beef cattle in Uruguay

Author:
Carlos O. Schild; Federico Giannitti; Rosane M. T. Medeiros; Caroline da Silva Silveira; Rubén D. Caffarena; Robert H. Poppenga; Franklin Riet-Correa
Source:
Journal of veterinary diagnostic investigation 2019 v.31 no.2 pp. 307-310
ISSN:
1943-4936
Subject:
Baccharis coridifolia; arsenic; ataxia (disorder); beef cattle; diarrhea; disease course; lead; lead arsenate; liver; lymphatic system; nephrosis; paresis; pesticide residues; poisoning; poisonous plants; seizures; steers; tissues; trichothecenes; Uruguay
Abstract:
... We describe and illustrate lesions in an outbreak of lead arsenate poisoning in beef cattle that ingested pesticide residues stored in an abandoned building of a former orange orchard. Of 70 exposed cattle, 14 had diarrhea, paresis, ataxia, recumbency, and/or seizures. Ten of the affected animals died after a clinical course of 12–18 h. Pathologic findings in 3 steers included extensive necrohemor ...
DOI:
10.1177/1040638719831413
PubMed:
30734668
PubMed Central:
PMC6838832

16. Adsorption and oxidation of arsenic by two kinds of β-MnO2

Author:
Zhigang Wei; Zhenrui Wang; Jiahong Yan; Yue Liu; Yang Wu; Yangfei Fang; Lin Yu; Gao Cheng; Zhanchang Pan; Guanghui Hu
Source:
Journal of hazardous materials 2019 v.373 pp. 232-242
ISSN:
0304-3894
Subject:
adsorption; arsenates; arsenic; arsenites; kinetics; manganese dioxide; oxidants; oxidation; oxygen; pH; sorption isotherms
Abstract:
... MnO₂ is one of the most widespread and cheapest materials in nature that can both adsorb arsenic and oxidize arsenite [As(III)] to arsenate [As(V)]. In this study, column β-MnO₂ [CM] with the main facet of {110} and pincer β-MnO₂ [PM] with the facets of {110} and {101} are synthesized and used to remove arsenic in water under different conditions. For the adsorption process, the experimental data ...
DOI:
10.1016/j.jhazmat.2019.03.071

17. Adsorption isotherm and thermodynamic studies of As(III) removal from aqueous solutions using used cigarette filter ash

Author:
Pezhman Zein Al-Salehin; Farid Moeinpour; Fatemeh S. Mohseni-Shahri
Source:
Applied water science 2019 v.9 no.8 pp. 172
ISSN:
2190-5487
Subject:
adsorbents; adsorption; aqueous solutions; arsenic; cigarettes; endothermy; energy-dispersive X-ray analysis; ions; models; pH; scanning electron microscopy; sorption isotherms; thermodynamics
Abstract:
... In the present paper, used cigarette filter ash was prepared and used as an active adsorbent to remove As(III) ions from aqueous solutions. The prepared adsorbent structure was identified by scanning electron microscopy analysis, Brunauer–Emmett–Teller method and energy-dispersive X-ray spectroscopy analysis. The influence of contact time, pH, adsorbent dose and initial concentration of As(III) on ...
DOI:
10.1007/s13201-019-1059-9

18. Adsorption mechanism of As(III) on polytetrafluoroethylene particles of different size

Author:
Youming Dong; Minling Gao; Zhengguo Song; Weiwen Qiu
Source:
Environmental pollution 2019 v.254 pp. 112950
ISSN:
0269-7491
Subject:
adsorption; arsenic; electrostatic interactions; heat production; hydrogen bonding; mass transfer; microplastics; models; moieties; oxyanions; pH; polytetrafluoroethylene; protonation; sorption isotherms; surface area; temperature
Abstract:
... Microplastics exhibit active environmental behavior and unique surface characteristics, and act as carriers for the migration of trivalent arsenic (As(III)) in the environment. Herein, the mechanism by which polytetrafluoroethylene (PTFE) microplastic particles adsorb As(III) is systematically determined. The larger the size of PTFE particles, the smaller the specific surface area, the higher the ...
DOI:
10.1016/j.envpol.2019.07.118

19. Adsorption of Aqueous As (III) in Presence of Coexisting Ions by a Green Fe-Modified W Zeolite

Author:
Adriana Medina-Ramirez; Procoro Gamero-Melo; Beatriz Ruiz-Camacho; Jesus Isaac Minchaca-Mojica; Rafael Romero-Toledo; Karen Yazmin Gamero-Vega
Source:
Water 2019 v.11 no.2 pp. -
ISSN:
2073-4441
Subject:
adsorption; arsenic; arsenites; chemical bonding; chemical treatment; endothermy; ferrous chloride; fly ash; groundwater; ions; pH; temperature; toxicity; water treatment; zeolites
Abstract:
... The high toxicity of arsenite and the difficulty to remove it is one of the main challenges for water treatment. In the present work the surface of a low cost zeolite was modified by chemical treatment with a ferrous chloride to enhance its arsenite adsorption capacity. The effect of pH, ions coexistence, concentration, temperature and dosage was studied on the adsorption process. Additionally, th ...
DOI:
10.3390/w11020281

20. Adsorption of As(V) from Water over a Hydroxyl-Alumina Modified Paddy Husk Ash Surface and Its Sludge Immobilization

Author:
Susmita Sarmah; Jitu Saikia; Ankana Phukan; Rajib Lochan Goswamee
Source:
Water, air, and soil pollution 2019 v.230 no.2 pp. 32
ISSN:
0049-6979
Subject:
X-ray diffraction; adsorbents; adsorption; aluminum; arsenates; arsenic; arsenites; cement; energy-dispersive X-ray analysis; groundwater; husk ash; kinetics; models; neoplasms; pH; paddies; particle size; scanning electron microscopy; sludge; sorption isotherms; zeta potential
Abstract:
... Arsenic (As) is considered as one of the most hazardous elements found in the groundwater. It is present in water in both arsenate (As(V)) and arsenite (As(III)) forms. On exposure for a considerable length of time to water having As concentration above the maximum permissible limit of 10 μg/L, there is a serious threat of developing various health problems including cancer. There is frequent repo ...
DOI:
10.1007/s11270-019-4088-y

21. Adsorption of arsenic(V) onto single sheet iron oxide: X-ray absorption fine structure and surface complexation

Author:
Zhou Yin; Johannes Lützenkirchen; Nicolas Finck; Noémie Celaries; Kathy Dardenne; Hans Chr. Bruun Hansen
Source:
Journal of colloid and interface science 2019 v.554 pp. 433-443
ISSN:
0021-9797
Subject:
X-ray absorption spectroscopy; adsorption; arsenic; binding capacity; ferrihydrite; goethite; iron oxides; models; nanosheets; pH; sorbents; sorption isotherms; surface area
Abstract:
... Adsorption onto two-dimensional nanosheet materials offers new possibilities for fast and efficient removal of contaminants from waters. Here, the adsorption of As(V) to a new type of iron oxides – single sheet iron oxide (SSI) – has been studied as a function of time, loading and pH. Adsorption of As(V) onto SSI was very fast compared to other iron oxides, with 80% of total As(V) adsorbed within ...
DOI:
10.1016/j.jcis.2019.07.024

22. Adsorptive removal of arsenic from real sample of polluted water using magnetic GO/ZnFe2O4 nanocomposite and ZnFe2O4 nanospinel

Author:
S. A. Hosseini; A. R. Abbasian; O. Gholipoor; S. Ranjan; N. Dasgupta
Source:
International journal of environmental science and technology 2019 v.16 no.11 pp. 7455-7466
ISSN:
1735-1472
Subject:
Fourier transform infrared spectroscopy; X-ray diffraction; adsorbents; adsorption; arsenic; decontamination; drinking water; humans; magnetism; nanocomposites; pH; remediation; response surface methodology; transmission electron microscopy; water pollution
Abstract:
... Developing affordable and efficient materials for the removal of arsenic from drinking water is crucial for human and environmental safety. In the present study, the adsorptive performance of magnetic GO/ZnFe₂O₄ nanocomposite and ZnFe₂O₄ nanospinel for arsenic removal from aqueous water was analyzed. The adsorbents were characterized using Fourier-transform infrared spectroscopy, X-ray powder diff ...
DOI:
10.1007/s13762-018-2140-x

23. Aerosols from a wastewater treatment plant using oxidation ditch process: Characteristics, source apportionment, and exposure risks

Author:
Tang Yang; Yunping Han; Junxin Liu; Lin Li
Source:
Environmental pollution 2019 v.250 pp. 627-638
ISSN:
0269-7491
Subject:
Dermatophilus; Enterobacteriaceae; Pseudomonas aeruginosa; Selenomonas; Staphylococcus aureus; Veillonella; Xanthobacter; aeration; aerosols; air; arsenic; bacteria; breathing; cadmium; carcinogenicity; cobalt; dewatering; exposure pathways; human health; oxidation; risk; risk assessment; sludge; wastewater; wastewater treatment; worker honey bees
Abstract:
... The study of aerosol dispersion characteristics in wastewater treatment plants (WWTPs) has attracted extensive attention. Oxidation ditch (OD) is a commonly implemented process during biological wastewater treatment. This study assessed the component characteristics, source apportionment, and exposure risks of aerosols generated from a WWTP using the OD process (AWO). The results indicated that th ...
DOI:
10.1016/j.envpol.2019.04.071

24. Affordable and efficient adsorbent for arsenic removal from rural water supply systems in Newfoundland

Author:
Javid Shadbahr; Tahir Husain
Source:
Science of the total environment 2019 v.660 pp. 158-168
ISSN:
0048-9697
Subject:
adsorbents; adsorption; arsenic; carbon; carbon dioxide; ferric chloride; fly ash; iodine value; iron; kinetics; models; raw materials; rural water supply; sorption isotherms; steam; temperature
Abstract:
... The fly ash from the Corner Brook Pulp and Paper (CBPP) mill was used in this study as the raw material for the preparation of a low-cost adsorbent for arsenic removal from the well water of Bell Island. The CBPP fly ash was physically activated in two different ways: (a) activation with pure CO2 (CAC) with the iodine number and methylene value of 704.53 mg/g and 292.32 mg/g, respectively; and (b) ...
DOI:
10.1016/j.scitotenv.2018.12.319

25. Aggregation-induced enhanced photoluminescence in magnetic graphene oxide quantum dots as a fluorescence probe for As(iii) sensing

Author:
Shabnam Pathan; Misna Jalal; Sanjay Prasad; Suryasarathi Bose
Source:
Journal of materials chemistry A 2019 v.7 no.14 pp. 8510-8520
ISSN:
2050-7496
Subject:
Raman spectroscopy; X-ray photoelectron spectroscopy; antibiotics; arsenic; detection limit; drinking water; fluorescence; fluorescent dyes; graphene; graphene oxide; heavy metals; humans; ions; magnetism; pH; photoluminescence; quantum dots; reactive oxygen species; ultraviolet radiation; water pollution; zeta potential
Abstract:
... Clean drinking water is a basic need of human beings around the world. In the past few decades, many research groups have been trying different methods to exploit quantum dots (QDs) to decontaminate water but, due to either cost or cumbersome steps, they have been unsuccessful. We have tried exploiting graphene quantum dots (GQDs) for heavy metal ion detection, particularly for arsenic ions in con ...
DOI:
10.1039/c8ta11358k

26. Alleviation of arsenic toxicity by phosphate is associated with its regulation of detoxification, defense, and transport gene expression in barley

Author:
Gerald Zvobgo; Jonas Lwalaba Wa Lwalaba; Tichaona Sagonda; James Mutemachani Mapodzeke; Noor Muhammad; Imran Haider Shamsi; Guo-ping ZHANG
Source:
Journal of integrative agriculture 2019 v.18 no.2 pp. 381-394
ISSN:
2095-3119
Subject:
antioxidants; arsenates; arsenic; barley; catalase; crop production; enzyme activity; gene expression; genes; genotype; glutathione; phosphates; phosphorus; phosphorus fertilizers; plant growth; plant tissues; polluted soils; superoxide dismutase; toxicity
Abstract:
... Arsenic (As) contamination in soils has posed a severe threat to safe crop production. The previous studies showed the antagonism between phosphorus (P) and As in plant growth and As uptake, while the mechanisms of alleviating As toxicity by P is not completely clear. Due to the limiting P condition, it is imperative to understand how low P addition can be used to suppress arsenate As (V) uptake a ...
DOI:
10.1016/S2095-3119(18)61955-0

27. Alterations of arsenic levels in arsenicosis residents and awareness of its risk factors: A population-based 20-year follow-up study in a unique coal-borne arsenicosis County in Guizhou, China

Author:
Dapeng Wang; Peng Luo; Zhonglan Zou; Qingling Wang; Maolin Yao; Chun Yu; Shaofeng Wei; Baofei Sun; Kai Zhu; Qibing Zeng; Jun Li; Bing Liang; Aihua Zhang
Source:
Environment international 2019 v.129 pp. 18-27
ISSN:
0160-4120
Subject:
air; arsenic; burning; coal; combustion; corn; drying; education programs; food contamination; health education; hot peppers; household income; lifestyle; questionnaires; regression analysis; rice; risk factors; smoking (habit); sociodemographic characteristics; socioeconomic status; soil; surveys; urine; China
Abstract:
... Currently, most arsenic (As) studies in populations are concerned with water-borne arsenicosis. However, residents in Xingren County of Guizhou Province, Southwest of China, represent a unique case of arsenicosis which is related to indoor combustion of high As-containing coal. This study aimed to assess the alterations of As levels and its risk factors in coal-borne arsenicosis residents during t ...
DOI:
10.1016/j.envint.2019.05.005

28. Ameliorative effect of gallic acid on sodium arsenite-induced spleno-, cardio- and hemato-toxicity in rats

Author:
Azam Hosseinzadeh; Gholamreza Houshmand; Mehdi Goudarzi; Seyed Hashem Sezavar; Saeed Mehrzadi; Esrafil Mansouri; Mojtaba Kalantar
Source:
Life sciences 2019 v.217 pp. 91-100
ISSN:
0024-3205
Subject:
adults; antioxidant activity; arsenic; blood serum; catalase; creatine; free radical scavengers; gallic acid; glutathione; glutathione peroxidase; heart; histopathology; hypertension; laboratory animals; males; medicinal properties; neoplasms; nitric oxide; oxidative stress; rats; skin lesions; sodium arsenite; spleen; superoxide dismutase; tissues; toxic substances
Abstract:
... Arsenic is an important toxic chemical affecting millions of people around the world. Exposure to inorganic arsenic results in various health problems including skin lesions, hypertension, hematological disturbance, cardiovascular disease, spleen enlargement and cancer. Gallic acid (GA) is an important phenolic compound possessing various pharmacological properties including anti-inflammatory, ant ...
DOI:
10.1016/j.lfs.2018.11.050

29. Amorphous Fe/Mn bimetal–organic frameworks: outer and inner structural designs for efficient arsenic(iii) removal

Author:
Tianshu Zhang; Jing Wang; Wentao Zhang; Chengyuan Yang; Liang Zhang; Wenxin Zhu; Jing Sun; Guoliang Li; Tao Li; Jianlong Wang
Source:
Journal of materials chemistry A 2019 v.7 no.6 pp. 2845-2854
ISSN:
2050-7496
Subject:
Fourier transform infrared spectroscopy; X-ray photoelectron spectroscopy; acute toxicity; adsorbents; adsorption; arsenic; crystallization; decontamination; ecosystems; engineering; ferrous oxide; iron; manganese; oxidation; oxygen; public health; remediation; synergism; temperature
Abstract:
... Highly efficient decontamination of naturally occurring As(iii) from aqueous media remains a rigorous task for public health and ecosystem protection. As its increasingly acute toxicity and mobile characteristics than those of As(v), it is imperative to exploit a technique for the simultaneous removal and detoxication of As(iii). Herein, a novel strategy involving outer and inner structural engine ...
DOI:
10.1039/c8ta10394a

30. Analysis of 11 trace elements in flight feathers of Italian Sparrows in southern Italy: A study of bioaccumulation through age classes, variability in three years of sampling, and relations with body condition

Author:
Michele Innangi; Davide De Rosa; Tiziana Danise; Ilaria Fozzi; Marcello Giannotti; Marilena Izzo; Marco Trifuoggi; Antonietta Fioretto
Source:
Science of the total environment 2019 v.651 pp. 2003-2012
ISSN:
0048-9697
Subject:
Passeriformes; adulthood; adults; age structure; aluminum; arsenic; barium; bioaccumulation; biosphere; birds; body condition; cadmium; chromium; copper; environmental hazards; feathers; indicator species; iron; juveniles; lead; manganese; models; molting; monitoring; nickel; trophic levels; zinc; Italy
Abstract:
... Trace elements have been acknowledged as one of the subtlest environmental hazards in all compartments of the total environment. Enhanced by activities in the anthroposphere, they accumulate in the atmosphere, lithosphere, and hydrosphere. Eventually, trace elements can bioaccumulate or biomagnifiy in the biosphere, with harmful effects on animals occupying higher trophic levels, including humans. ...
DOI:
10.1016/j.scitotenv.2018.10.105

31. Analysis of Toxic and Essential Elements in the Blood and Feathers of Humboldt Penguins (Spheniscus humboldti) at Punta San Juan, Peru

Author:
Michael J. Adkesson; Jeffrey M. Levengood; John W. Scott; David J. Schaeffer; Brent Panno; Jennifer N. Langan; Susana Cárdenas-Alayza; Sandra James-Yi
Source:
Journal of wildlife diseases 2019 v.55 no.2 pp. 438-443
ISSN:
0090-3558
Subject:
Spheniscus; aluminum; arsenic; atomic absorption spectrometry; barium; blood serum; boron; breeding; calcium; copper; environmental monitoring; feathers; fluorescence; human population; iron; magnesium; manganese; marine protected areas; mercury; penguins; potassium; reproductive success; selenium; sodium; titanium; toxic substances; toxicity; vapors; zinc; Peru
Abstract:
... Whole blood, serum, and feather samples from 29 Humboldt Penguins (Spheniscus humboldti) at the Punta San Juan Marine Protected Area, Peru, were analyzed for 55 toxic and essential elements by using inductively coupled plasma mass spectrometry. Mercury (Hg) was analyzed by cold vapor atomic fluorescence. Maximum Hg concentrations in serum (0.0056 mg/g), whole blood (0.297 mg/kg), and feathers (1.8 ...
DOI:
10.7589/2018-03-081

32. Analysis of chickpea gene co-expression networks and pathways during heavy metal stress

Author:
Birendra Singh Yadav; Swati Singh; Sameer Srivastava; Ashutosh Mani
Source:
Journal of biosciences 2019 v.44 no.4 pp. 99
ISSN:
0250-5991
Subject:
F-box proteins; abiotic stress; amino acids; arsenic; beta-glucosidase; biochemical pathways; biosynthesis; biotic stress; cadmium; carboxylic ester hydrolases; cellulose synthase; chickpeas; chromium; gene expression regulation; genes; heavy metals; indole alkaloids; isoflavones; microarray technology; riboflavin; stress tolerance
Abstract:
... Crop productivity and yield are adversely affected by abiotic and biotic stresses. Therefore, finding out the genes responsible for stress tolerance is a significant stride towards crop improvement. A gene co-expression network is a powerful tool to detect the most connected genes during heavy metal (HM) stress in plants. The most connected genes may be responsible for HM tolerance by altering the ...
DOI:
10.1007/s12038-019-9899-x

33. Analysis of total arsenic content in purchased rice from Ecuador

Author:
Oliva Atiaga-Franco; Xose Luis Otero; Alejandrina Gallego-Picó; Luis Escobar-Castañeda; Juan Bravo-Yagüe; David Carrera-Villacrés
Source:
Czech Journal of Food Sciences v.37 no.6 pp. 425-431
ISSN:
1805-9317
Subject:
absorption; arsenic; dietary exposure; human food chain; humans; hydrides; parboiling; rice; risk; spectroscopy; staple foods; Andes region; Ecuador
Abstract:
... Natural and anthropogenic sources contribute to arsenic contamination in water and human food chain in Andean countries. Human exposure to arsenic via rice consumption is of great concern in countries where this crop is the dominant staple food, and limited information is available on the arsenic contamination on rice in Ecuador. This work was to contribute to the lack of knowledge analysing total ...
DOI:
10.17221/183/2018-cjfs

34. Anomalous concentrations of arsenic, fluoride and radon in volcanic-sedimentary aquifers from central Italy: Quality indexes for management of the water resource

Author:
D. Cinti; O. Vaselli; P.P. Poncia; L. Brusca; F. Grassa; M. Procesi; F. Tassi
Source:
Environmental pollution 2019 v.253 pp. 525-537
ISSN:
0269-7491
Subject:
aquifers; arsenic; cold; drinking water; fluorides; geostatistics; groundwater flow; humans; mixing; pollutants; radionuclides; radon; temperature; volcanic rocks; water supply; weathering; wells; Italy
Abstract:
... 659 water samples from springs and wells in the Sabatini and Vicano-Cimino Volcanic Districts (central Italy) were analyzed for arsenic (As), fluoride (F⁻) and radon (²²²Rn) concentrations. Waters mostly sourced from a shallow and cold aquifer hosted within volcanic rocks, which represents the main public drinking water supply. Cold waters from perched aquifers within sedimentary formations and th ...
DOI:
10.1016/j.envpol.2019.07.063

35. Anoxic growth optimization for metal respiration and photobiological hydrogen production by arsenic‐resistant Rhodopseudomonas and Rhodobacter species

Author:
Hareem Mohsin; Azka Asif; Yasir Rehman
Source:
Journal of basic microbiology 2019 v.59 no.12 pp. 1208-1216
ISSN:
0233-111X
Subject:
Rhodobacter; Rhodopseudomonas palustris; Rhodospirillaceae; acetates; anaerobic conditions; anaerobiosis; arsenates; arsenic; arsenites; bacteria; carbon; citrates; cobalt; effluents; gas production (biological); hydrogen production; lactic acid; lead; metal tolerance; nickel; nucleotide sequences; oxalates; ribosomal RNA; selenium; toxicity
Abstract:
... The current research focuses on anaerobic respiration of arsenic and other toxic metals by purple nonsulfur bacteria (PNSB). Among the optimization assays performed were carbon utilization, cross metal resistance, and metal respiration, along with a comparison of each assay in photoheterotrophic and chemoheterotrophic growth. The bacteria were identified by the classification of 16S ribosomal RNA ...
DOI:
10.1002/jobm.201900100

36. Antagonistic Interactions between Arsenic, Lead, and Cadmium in the Mouse Gastrointestinal Tract and Their Influences on Metal Relative Bioavailability in Contaminated Soils

Author:
Hong-Bo Li; Xiao-Qiang Chen; Jue-Yang Wang; Meng-Ya Li; Di Zhao; Xiao-San Luo; Albert L. Juhasz; Lena Q. Ma
Source:
Environmental science & technology 2019 v.53 no.24 pp. 14264-14272
ISSN:
1520-5851
Subject:
absorption; acetates; arsenic; bioavailability; cadmium; chlorides; digestive tract; enamel; environmental science; humans; intestines; mice; oxyanions; sodium arsenate; technology
Abstract:
... Soils are often co-contaminated with As, Pb, and Cd. To what extent ingested metal(loid)s interact with each other in the gastrointestinal tract and influence their RBA (relative bioavailability) is largely unknown. Three soils predominantly contaminated with As (MS, mining/smelting impacted), Pb (WR, wire rope production impacted), and Cd (EP, enamel pottery production impacted) were administered ...
DOI:
10.1021/acs.est.9b03656

37. Anthropogenic atmospheric toxic metals emission inventory and its spatial characteristics in Guangdong province, China

Author:
Qing'e Sha; Menghua Lu; Zhijiong Huang; Zibing Yuan; Guanglin Jia; Xiao Xiao; Yuqi Wu; Zhiwei Zhang; Cheng Li; Zhuangmin Zhong; Junyu Zheng
Source:
Science of the total environment 2019 v.670 pp. 1146-1158
ISSN:
0048-9697
Subject:
adverse effects; arsenic; batteries; bioavailability; cadmium; cement; chromium; coal; combustion; emissions; emissions factor; factories; fluorescent lamps; gasoline; human health; humans; inventories; iron; issues and policy; lead; mercury; particulates; risk; river deltas; steel; toxicity; uncertainty; China
Abstract:
... Atmospheric toxic metals (TMs) may cause adverse effects on the environment and human health due to their bioavailability and toxicity. High-resolution TMs emission inventory is important input data for assessing human exposure risks, especially synergistic toxicity of multiple toxic metals. By using the latest city- and enterprise-level environment statistical data, an emission inventory of five ...
DOI:
10.1016/j.scitotenv.2019.03.206

38. Anthropogenic spherules in Zuari estuary, south west coast of India

Author:
Suhas S. Shetye; N.G. Rudraswami; K. Nandakumar; Saiprasad Manjrekar
Source:
Marine pollution bulletin 2019 v.143 pp. 1-5
ISSN:
0025-326X
Subject:
aluminum oxide; antimony; arsenic; calcium; calcium oxide; coasts; elemental composition; estuaries; ferrous oxide; fly ash; glass; lead; magnesium oxide; marine environment; paints; pavements; silica; sodium; traffic; water pollution; India
Abstract:
... In this study we report silica rich anthropogenic spherules from the marine environment. We found spherical, dumbbell, teardrop and fused spherules in Zuari estuary (near the Dona paula jetty), south west coast of India. The spherules were composed of SiO2 (69.8%), Na2O (13.2%), CaO (8.8%), MgO (3.8%), and traces of Al2O3, and FeO. Their high Na and Ca contents rules out the possibility of being a ...
DOI:
10.1016/j.marpolbul.2019.03.058

39. Antimony speciation and potential ecological risk of metal(loid)s in plain wetlands in the lower Yangtze River valley, China

Author:
Cheng Yao; Xia Jiang; Feifei Che; Kun Wang; Li Zhao
Source:
Chemosphere 2019 v.218 pp. 1114-1121
ISSN:
0045-6535
Subject:
antimony; arsenic; basins; cadmium; chromium; copper; eutrophication; fabrics; freshwater; lead; nickel; risk; river valleys; sediments; statistical analysis; toxic substances; toxicity; water pollution; water treatment; wetlands; zinc; China; Yangtze River
Abstract:
... Increasing attention is being paid to Sb as a primary hazardous substance, and further systematic studies of Sb behavior in freshwater wetlands are required. The plain wetlands in Lake Taihu basin located in lower Yangtze River valley, are heavily populated and economically developed area in China. The plain wetlands receive polluted water from point sources (textile and printing plants). In this ...
DOI:
10.1016/j.chemosphere.2018.11.164

40. Antimony tolerance and accumulation in a metallicolous and a non-metallicolous population of Salvia spinosa L.

Author:
Shakiba Rajabpoor; Seyed Majid Ghaderian; Henk Schat
Source:
Plant and soil 2019 v.437 no.1-2 pp. 11-20
ISSN:
0032-079X
Subject:
Salvia spinosa; antimony; arsenic; byproducts; hydroponics; mineralization; roots; shoots; soil; toxicity; Iran
Abstract:
... AIMS: Antimony (Sb) is locally found at potentially toxic concentrations in mineralized soils, usually together with arsenic (As). However, local adaptation of plant populations to Sb toxicity has never been shown thus far. Here we compared Sb tolerance and accumulation between a non-metallicolous (NM) population of Salvia spinosa, and a con-specific metallicolous (M) population from a strongly Sb ...
DOI:
10.1007/s11104-019-03961-x

41. Antioxidant Properties and Arsenic Speciation of Ultrafiltration and Nanofiltration Derived Abalone Viscera Hydrolysate Fraction

Author:
Wuyin Weng; Jieyu Li; Ting Li; Yanjun Ye
Source:
Journal of aquatic food product technology 2019 v.28 no.1 pp. 64-73
ISSN:
1547-0636
Subject:
2,2-diphenyl-1-picrylhydrazyl; abalone; animal organs; antioxidant activity; antioxidants; arsenates; arsenic; arsenites; ascorbic acid; hydrolysates; leucine; lipid peroxidation; molecular weight; nanofiltration; potassium; sodium; ultrafiltration
Abstract:
... A fraction with molecular weight of 0.2–1.0 kDa was prepared from abalone viscera hydrolysate by ultrafiltration and nanofiltration. The contents of protein, carbohydrate, and fat in abalone viscera were 45.75%, 18.19%, and 13.60%, respectively. The protein in abalone viscera hydrolysate faction (AVHF) reached up to 75.73%, while carbohydrate and fat fell to 1.80% and 0.20%, respectively. The leuc ...
DOI:
10.1080/10498850.2018.1561570

42. The Application of Expectation and Standard Deviation Calculations in the Evaluation of Dissolved Arsenic in the Pu River, Liaoning Province, Northeastern China

Author:
Xue Feng; Haozhen Zhang; Liangliang Li; Kan Zhang; Tieliang Wang
Source:
Bulletin of environmental contamination and toxicology 2019 v.102 no.1 pp. 84-91
ISSN:
0007-4861
Subject:
arsenic; pollution control; rivers; standard deviation; water pollution; China
Abstract:
... Water samples were collected from the Pu River in 2017 to research the distribution and accumulation characteristics of dissolved arsenic. We mainly built three types of expectation and standard deviation calculations corresponding to discrete, weighted and continuous random variables. The continuous expectation and standard deviation calculations are defined based on the concentration function an ...
DOI:
10.1007/s00128-018-2503-5

43. Application of an agro-industrial waste for the removal of As (III) in a counter-current multiphase fluidized bed

Author:
D. De; V. Aniya; B. Satyavathi
Source:
International journal of environmental science and technology 2019 v.16 no.1 pp. 279-294
ISSN:
1735-1472
Subject:
Millettia pinnata; adsorption; agricultural wastes; arsenic; biodiesel; biosorbents; biosorption; developing countries; fluidized beds; groundwater; liquids; oilseed cakes; particle size; pollution; regression analysis; sorption isotherms; surface area
Abstract:
... Arsenic pollution in groundwater has been identified as a major hazard in developing countries. In this purview, Karanja or Pongamia pinnata seed cake, a biodiesel residue has been proposed to being utilized to curb the arsenic menace using an agro-industrial waste. The study investigates the biosorption of As (III) onto thermally activated de-oiled karanja seed cake (TAKB) with a surface area of ...
DOI:
10.1007/s13762-018-1651-9

44. Application of different single extraction procedures for assessing the bioavailability of heavy metal(loid)s in soils from overlapped areas of farmland and coal resources

Author:
Ping Luo; Xin Xiao; Xiaoxuan Han; Yu Ma; Xiaofei Sun; Jiachao Jiang; Hui Wang
Source:
Environmental science and pollution research international 2019 v.26 no.15 pp. 14932-14942
ISSN:
0944-1344
Subject:
EDTA (chelating agent); acetic acid; aerial parts; agricultural land; ammonium; ammonium acetate; arsenic; bioaccumulation factor; bioavailability; cadmium; chromium; citric acid; coal; copper; crops; foliar uptake; heavy metals; lead; risk; roots; soil; straw; tissues; wheat; zinc; China
Abstract:
... Heavy metal(loid) extraction from soils in overlapped areas of farmland and coal resources (OAFCR) is crucial in understanding heavy metal bioavailability in soil and the subsequent risks to crops and consumers. However, limited attention has been paid to the extraction procedure of heavy metal(loid)s in OAFCR soils in the research. This study therefore explored different single and mixed extracti ...
DOI:
10.1007/s11356-019-04833-8

45. Application of metallurgical slag to treat geothermal wastewater with high concentrations of arsenic and boron

Author:
B. M. Mercado-Borrayo; M. Solís-López; R. Schouwenaars; R. M. Ramírez-Zamora
Source:
International journal of environmental science and technology 2019 v.16 no.5 pp. 2373-2384
ISSN:
1735-1472
Subject:
United States Environmental Protection Agency; adsorbents; adsorption; arsenic; boron; experimental design; pH; pollutants; pollution control; response surface methodology; scanning electron microscopes; slags; toxicity; wastewater; wastewater irrigation
Abstract:
... The reuse of geothermal wastewater for irrigation is an attractive alternative for supplying water demand in agriculture, due to the high volumes generated in geothermal plants. This application is limited by the presence of toxic semimetals such as arsenic and boron, which generally require high-cost commercial adsorbents for removal. This work studies the removal mechanism and process optimizati ...
DOI:
10.1007/s13762-018-1952-z

46. Application of modified receptor model for soil heavy metal sources apportionment: a case study of an industrial city, China

Author:
Yufeng Li; Zhongqiu Zhao; Ye Yuan; Peitian Zhu; Xuezhen Li; Anning Guo; Qiao Yang
Source:
Environmental science and pollution research 2019 v.26 no.16 pp. 16345-16354
ISSN:
0944-1344
Subject:
agricultural land; arsenic; cadmium; case studies; chromium; copper; heavy metals; lead; mercury; models; nickel; pollution; soil types; traffic; zinc; China
Abstract:
... As we all know, geochemical data usually contain outliers and they are heterogeneous, which will severely affect the use of receptor models based on classical estimates. In this paper, an advanced modified RAPCS-RGWR (robust absolute principal component scores-robust geographically weighted regression) receptor model was introduced to analyze the pollution sources of eight heavy metals (Cd, Hg, As ...
DOI:
10.1007/s11356-019-04973-x

47. Application of volume retarded osmosis – Low pressure membrane hybrid process for recovery of heavy metals in acid mine drainage

Author:
Jungwon Choi; Sung-Ju Im; Am Jang
Source:
Chemosphere 2019 v.232 pp. 264-272
ISSN:
0045-6535
Subject:
EDTA (chelating agent); acid mine drainage; arsenic; cadmium; copper; economic valuation; heavy metals; iron; lead; manganese; metal ions; nanofiltration; osmosis; osmotic pressure; ultrafiltration; zinc
Abstract:
... Recovery of heavy metals in acid mine drainage (AMD) such as Mn, Fe, Cu, Zn, As, Cd and Pb was evaluated using volume retarded osmosis and low-pressure membrane (VRO-LPM) process. In VRO-LPM process, the draw solution (DS) is regenerated by the naturally generated pressure, giving its economic value. Ethylenediaminetetraacetic acid tetrasodium salt (EDTA-4Na) and Poly (sodium-4-styrenesulfonate, P ...
DOI:
10.1016/j.chemosphere.2019.05.209

48. Applied statistical functions and multivariate analysis of geochemical compositional data to evaluate mineralization in Glojeh polymetallic deposit, NW Iran

Author:
F. Darabi-Golestan; A. Hezarkhani
Source:
Frontiers of earth science 2019 v.13 no.1 pp. 229-246
ISSN:
2095-0195
Subject:
aluminum; antimony; arsenic; copper; epigenetics; factor analysis; gold; lead; magnesium; manganese; mercury; mineralization; models; regression analysis; silver; strontium; t-test; tin; Iran
Abstract:
... Various genesis of epithermal veins as well as host rock cause complication in the modeling process. Thus LINEST and controlling function were applied to improve the accuracy and the quality of the model. The LINEST is a model which is based on multiple linear regression and refers to a branch of applied statistics. This method concerns directly to the application of t-test (TINV and TDIST to anal ...
DOI:
10.1007/s11707-018-0705-0

49. Appraising spatial variations of As, Fe, Mn and NO3 contaminations associated health risks of drinking water from Surma basin, Bangladesh

Author:
Nasir Ahmed; Md. Bodrud-Doza; Abu Reza Md. Towfiqul Islam; Shahadat Hossain; Md. Moniruzzaman; Nipa Deb; Md. Abdul Quaiyum Bhuiyan
Source:
Chemosphere 2019 v.218 pp. 726-740
ISSN:
0045-6535
Subject:
World Health Organization; adults; arsenic; basins; children; drinking water; geographic information systems; geostatistics; groundwater; guidelines; health effects assessments; ingestion; iron; kriging; manganese; minerals; nitrates; risk; risk characterization; rocks; spatial variation; water quality standards; weathering; Bangladesh
Abstract:
... This study aims to appraise the spatial variations and pathways of groundwater contaminations and associated health risks in the Surma basin, Bangladesh using geostatistics, Fuzzy GIS technique and health risk modelbased on ninety groundwater samples. The results show that the mean concentrations of As, Fe, Mn and NO₃ are below the Bangladesh water quality standard, whereas As, Fe and Mn concentra ...
DOI:
10.1016/j.chemosphere.2018.11.104

50. Are Myriophyllum alterniflorum biomarker responses to arsenic stress differentially affected by hydrodynamic conditions?

Author:
Maha Krayem; Véronique Deluchat; Philippe Hourdin; Pascal Labrousse
Source:
Chemosphere 2019 v.225 pp. 497-506
ISSN:
0045-6535
Subject:
Myriophyllum; arsenic; biomarkers; branching; carotenoids; cell respiration; chlorophyll; environmental monitoring; hydrodynamics; hydrogen peroxide; macrophytes; osmotic pressure; photosynthesis; phytoremediation; root growth; roots; shoots; toxicity; water quality
Abstract:
... Arsenic (As) is a significant contaminant in the environment and its detection through macrophytes can provide a powerful tool. Myriophyllum alterniflorum constitutes a good candidate by virtue of its ability to accumulate contaminants, and moreover its biomarkers can respond to the presence of trace metals and metalloids. The objective of this study therefore is to evaluate the watermilfoil respo ...
DOI:
10.1016/j.chemosphere.2019.03.065

51. Are There as Many Essential and Non-essential Minerals in Hydroponic Strawberry (Fragaria ananassa L.) Compared to Those Grown in Soil?

Author:
Seong Hwa Jeon; Saranya Kuppusamy; Young-Eun Yoon; Hyeon Tae Kim; Yong Bok Lee
Source:
Biological trace element research 2019 v.187 no.2 pp. 562-567
ISSN:
0163-4984
Subject:
Fragaria ananassa; aluminum; arsenic; cadmium; calcium; chromium; cobalt; copper; fruit composition; fruits; germanium; hydroponics; iron; lead; leaves; magnesium; manganese; mercury; mineral content; minerals; molybdenum; nickel; palladium; rubidium; selenium; sodium; soil; strawberries; strontium; toxicity; vanadium; zinc
Abstract:
... The present study aims to compare the contents of minerals (essential major—K, Ca, Mg, Na, P, S; essential trace—Fe, Mn, Zn, Cu, B, Mo, As, Se, Ni, V, Cr, Co; non-essential—Sn, Ga, Li, Be, Rb, Sr, Al, Pd, Cd, Hg, Pb, Ge) in strawberry (stem, leaf, and fruit) cultivated in two different cultivation systems, soil and hydroponic. The concentrations of 30 minerals in the acid-digested strawberry sampl ...
DOI:
10.1007/s12011-018-1394-y

52. Arsanilic acid contributes more to total arsenic than roxarsone in chicken meat from Chinese markets

Author:
Di Zhao; Jueyang Wang; Daixia Yin; Mengya Li; Xiaoqiang Chen; Albert L. Juhasz; Jun Luo; Ana Navas-Acien; Hongbo Li; Lena Q. Ma
Source:
Journal of hazardous materials 2019 pp. -
ISSN:
0304-3894
Subject:
adults; arsanilic acid; arsenic; bladder; chicken meat; cities; dietary exposure; geographical variation; health effects assessments; lung neoplasms; poultry production; roxarsone; world markets; China
Abstract:
... Organoarsenicals have been used in poultry production for years, however, studies focused on roxarsone (ROX), with little attention to p-arsanilic acid (ASA). We assessed As concentration and speciation in chicken meat collected from 10 cities in China. The geometric mean for total As in 249 paired raw and cooked samples was 4.85 and 7.27 μg kg–1 fw, respectively. Among 81 paired raw and cooked sa ...
DOI:
10.1016/j.jhazmat.2019.121178

53. Arsenate and microbial dynamics in different phosphorus regimes of the subtropical Pacific Ocean

Author:
Fuminori Hashihama; Shuhei Suwa; Jota Kanda; Makoto Ehama; Ryousuke Sakuraba; Shinko Kinouchi; Mitsuhide Sato; Tamaha Yamaguchi; Hiroaki Saito; Yoshitoshi Ogura; Tetsuya Hayashi; Hiroshi Mori; Ken Kurokawa; Shotaro Suzuki; Koji Hamasaki
Source:
Progress in oceanography 2019 v.176 pp. 102115
ISSN:
0079-6611
Subject:
Prochlorococcus; alkaline phosphatase; arsenates; arsenic; bioassays; detection limit; enzyme activity; euphotic zone; excretion; genes; metabolism; microbial growth; microorganisms; phosphates; phosphorus; summer; surface water; toxicity; Pacific Ocean
Abstract:
... Biologically toxic arsenate is physicochemically similar to biologically essential phosphate. Because arsenate and phosphate are indiscriminately incorporated by microbes, their ambient concentration ratios can be an important factor controlling microbial growth and metabolism. This study investigated the spatial distributions of arsenate and phosphate and the associated biogeochemical dynamics in ...
DOI:
10.1016/j.pocean.2019.05.007

54. Arsenate phytoextraction abilities of one-year-old tree species and its effects on the nutritional element content in plant organs

Author:
Sylwia Budzyńska; Magdalena Krzesłowska; Przemysław Niedzielski; Piotr Goliński; Mirosław Mleczek
Source:
International journal of phytoremediation 2019 v.21 no.10 pp. 1019-1031
ISSN:
1549-7879
Subject:
Acer pseudoplatanus; Betula pendula; Quercus robur; Ulmus; arsenates; arsenic; calcium; hydroponics; magnesium; nutrient content; phytoaccumulation; plant organs; polluted soils; potassium; roots; shoots; silicon; sodium; trees
Abstract:
... The aim of the study was to evaluate the As phytoextraction potential of four tree species: Acer pseudoplatanus L., Betula pendula Roth., Quercus robur L., and Ulmus laevis Pall. in light of their prospective use in the phytoremediation of arsenate [As(V)] contaminated soils. The content of nutritional elements: B, Ca, K, Mg, Na, Si, P, and S was also analyzed. The trees were grown for 1 month in ...
DOI:
10.1080/15226514.2019.1594684

55. Arsenic Application Changed Growth, Photo-Synthetic Pigments and Antioxidant Enzymes Activity in Sorghum (Sorghum bicolor L.) Under Salinity Stress

Author:
B. Talebi; M. Heidari; H. Ghorbani
Source:
Scientia Agriculturae Bohemica 2019 v.50 no.3 pp. 155-163
ISSN:
1805-9430
Subject:
Sorghum bicolor; anthocyanins; antioxidant enzymes; arsenic; carotenoids; catalase; chlorophyll; enzyme activity; food chain; leaves; peroxidase; photosynthesis; phytomass; roots; salinity; salt stress; seedlings; shoots; soil; stomatal conductance; tissues; wildlife
Abstract:
... The elevation of arsenic (As) content in soils is of considerable concern with respect to its uptake by plant and subsequent entry into wildlife and human food chains. The treatment of sorghum seedlings with As as NaH₂As₄O. 7H₂O at various concentrations (A₁ = 0, A₂ = 20, A₃ = 40 and A₄ = 60 mg As kg⁻¹ soil) and salinity at four different levels (S₁ = 0, S₂ = 3, S₃ = 6 and S₃ = 9 dS m⁻¹) reduced f ...
DOI:
10.2478/sab-2019-0021

56. Arsenic Bioaccumulation and Biotransformation in Clams (Asaphis violascens) Exposed to Inorganic Arsenic: Effects of Species and Concentrations

Author:
Wei Zhang; Zhiqiang Guo; Yun Wu; Yanlong Qiao; Li Zhang
Source:
Bulletin of environmental contamination and toxicology 2019 v.103 no.1 pp. 114-119
ISSN:
0007-4861
Subject:
arsenic; bioaccumulation; biotransformation; cacodylic acid; clams; geographical distribution; humans; methylation; toxicity
Abstract:
... High arsenic (As) concentrations are found in marine clams, usually as less-toxic arsenobetaine (AsB). However, when clams were exposed to elevated As concentrations in the environments, As species distribution within them may be altered. This study aimed to determine As bioaccumulation and biotransformation in marine clams (Asaphis violascens) along As concentration gradients for 10 days. Nine tr ...
DOI:
10.1007/s00128-018-2493-3

57. Arsenic Contamination in Rice Grown Under Anaerobic Condition in Arid Agriculture: Assessment and Remediation

Author:
Muhammad Mahmood-ul-Hassan; Munazza Yousra; Rizwan Ahmad; Sair Sarwar
Source:
Bulletin of environmental contamination and toxicology 2019 v.103 no.6 pp. 865-870
ISSN:
0007-4861
Subject:
anaerobic conditions; arsenic; grain yield; iron; paddies; plant growth; remediation; rice; soil; soil sampling; straw; sulfates; surveys
Abstract:
... Arsenic (As) concentrations in fine (2) and coarse (3) rice varieties belonging to Hafizabad, Gujranwala and Sheikhupura districts was assessed initially by means of field survey, followed by pot experiments. Bulk soil samples collected from same rice districts (Hafizabad and Gujtanwala) were spiked with As (0, 10, 20 mg kg⁻¹) and each was amended with iron sulphate (0, 25, 50 g kg⁻¹) to investiga ...
DOI:
10.1007/s00128-019-02730-x

58. Arsenic Drinking Water Violations Decreased across the United States Following Revision of the Maximum Contaminant Level

Author:
Stephanie A. Foster; Michael J. Pennino; Jana E. Compton; Scott G. Leibowitz; Molly L. Kile
Source:
Environmental science & technology 2019 v.53 no.19 pp. 11478-11485
ISSN:
1520-5851
Subject:
United States Environmental Protection Agency; arsenic; carcinogenicity; environmental science; information systems; maximum contaminant level; public health
Abstract:
... Arsenic poses a threat to public health due to widespread environmental prevalence and known carcinogenic effects. In 2001, the US EPA published the Final Arsenic Rule (FAR) for public drinking water, reducing the maximum contaminant level (MCL) from 50 to 10 μg/L. We investigated impacts of the FAR on drinking water violations temporally and geographically using the Safe Drinking Water Informatio ...
DOI:
10.1021/acs.est.9b02358
PubMed:
31502444
PubMed Central:
PMC7075409

59. Arsenic Oxidation by Flavin-Derived Reactive Species under Oxic and Anoxic Conditions: Oxidant Formation and pH Dependence

Author:
Kunfu Pi; Ekaterina Markelova; Peng Zhang; Philippe Van Cappellen
Source:
Environmental science & technology 2019 v.53 no.18 pp. 10897-10905
ISSN:
1520-5851
Subject:
arsenic; catalase; isopropyl alcohol; oxidants; oxidation; oxygen; pH; pollution; riboflavin; technology
Abstract:
... Flavins are ubiquitous redox-active compounds capable of producing reactive oxygen (O₂•–, •OH, and H₂O₂) and flavin radical species in natural environments, yet their roles in the redox transformations of environmental contaminants, such as arsenic (As), remain to be investigated. Here, we show that reduced flavins can be a source of effective oxidants for As(III) under both oxic and anoxic condit ...
DOI:
10.1021/acs.est.9b03188

60. Arsenic Partitioning Behavior During Sludge Co-combustion: Thermodynamic Equilibrium Simulation

Author:
Jingyong Liu; Candie Xie; Wuming Xie; Xiaochun Zhang; KenLin Chang; Jian Sun; Jiahong Kuo; Wenhao Xie; Chao Liu; Shuiyu Sun; Musa Buyukada; Fatih Evrendilek
Source:
Waste and biomass valorization 2019 v.10 no.8 pp. 2297-2307
ISSN:
1877-2641
Subject:
air; aluminum oxide; arsenic; arsenic oxide; calcium oxide; carbon dioxide; chlorides; combustion; ferric oxide; nitrogen; oxygen; sewage sludge; silica; thermodynamics; volatilization
Abstract:
... Using the computation method of thermodynamic equilibrium, effects of sewage sludge (SS) co-combustion conditions and interactions with Fe₂O₃, SiO₂, CaO and Al₂O₃ on migration and transformation of arsenic (As) were simulated in oxy-fuel (CO₂/O₂) and air (N₂/O₂) atmospheres. Arsenic mainly existed as As(s), As₄(g), As₂O₅(s), As₄O₆(g) and AsO(g) and volatilized more easily in reducing than oxidizin ...
DOI:
10.1007/s12649-018-0248-3

61. Arsenic Partitioning in High-Temperature Ash Deposits during Oxy-fuel Combustion

Author:
Huimin Liu; Xin Sun; Yueming Wang; Chan Zou; Chunbo Wang; Jost O. L. Wendt
Source:
Energy & fuels 2019 v.34 no.1 pp. 863-870
ISSN:
1520-5029
Subject:
adsorption; aerosols; air; aluminum; aluminum silicates; arsenic; calcium; cations; coal; combustion; iron; oxygen; particle size distribution; sodium sulfate; surface area; temperature; vapors
Abstract:
... A temperature-controlled ash deposition probe was applied to collect temporally resolved deposit samples in a 100 kW rated down-fired pilot-scale combustor under two atmospheres: (1) air condition and (2) 70% O₂ as inlet gas (named as OXY70). The mineral compositions, particle size distributions, and partitioning of arsenic in the inside and outside deposits were measured. The properties of the as ...
DOI:
10.1021/acs.energyfuels.9b02969

62. Arsenic Removal from a Highly Contaminated Groundwater by a Combined Coagulation-Filtration-Adsorption Process

Author:
A. Chiavola; E. D’Amato; P. Sirini; C. Caretti; R. Gori
Source:
Water, air, and soil pollution 2019 v.230 no.4 pp. 87
ISSN:
0049-6979
Subject:
adsorbents; adsorption; air; arsenic; coagulants; coagulation; cost estimates; drainage; drinking water; electrolytes; filtration; groundwater; groundwater contamination; iron; iron oxides; laws and regulations; liquids; mining; mixing; mixing ratio; pH; remediation; sand
Abstract:
... The aim of the present experimental study was to perform a technical-economic evaluation of a combined treatment system, consisting of coagulation-flocculation or rapid sand filtration as pre-treatment followed by column adsorption, for reducing the arsenic concentration from approximately 1 mg/L to below the limit set for groundwater remediation and drinking water, i.e., 0.01 mg/L, according to t ...
DOI:
10.1007/s11270-019-4142-9

63. Arsenic Removal of Contaminated Soils by Phytoremediation of Vetiver Grass, Chara Algae and Water Hyacinth

Author:
Mohammad Milad Taleei; Narjessadat Karbalaei Ghomi; Seyed Ali Jozi
Source:
Bulletin of environmental contamination and toxicology 2019 v.102 no.1 pp. 134-139
ISSN:
0007-4861
Subject:
Chara vulgaris; Chrysopogon zizanioides; Eichhornia crassipes; adsorption; algae; arsenic; phytoremediation; polluted soils; thermodynamics
Abstract:
... This research has been carried out for assessing phytoremediation of contaminated soils with 4 concentrations of arsenic by three plants, namely Vetiver grass (Vetiveria zizanioides), Chara algae (Chara vulgaris) and Water hyacinth (Hyacintus orientalis). The experimental results showed that at least two sampling times were significantly different. In addition, at least two plants were also signif ...
DOI:
10.1007/s00128-018-2495-1

64. Arsenic Speciation on Silver Nanofilms by Surface-Enhanced Raman Spectroscopy

Author:
Mingwei Yang; Valery Liamtsau; Changjun Fan; Kelli L. Sylvers; Anthony J. McGoron; Guangliang Liu; Fengfu Fu; Yong Cai
Source:
Analytical chemistry 2019 v.91 no.13 pp. 8280-8288
ISSN:
1520-6882
Subject:
Raman spectroscopy; arsenates; arsenic; arsenites; cacodylic acid; chromatography; droplets; nanosheets; nanosilver; silver; sodium dodecyl sulfate; solvents; surface tension; surfactants
Abstract:
... Surface-enhanced Raman spectroscopy (SERS), as a nondestructive and fast detection technique, is a promising alternative approach for arsenic detection, particularly for in situ applications. SERS-based speciation analysis according to the fingerprint SERS signals of different arsenicals has the potential to provide a superior technique in species preservation over the conventional chromatographic ...
DOI:
10.1021/acs.analchem.9b00999

65. Arsenic Toxicity Induced Changes in Growth, Photosynthetic Pigments, Antioxidant Machinery, Essential Oil, Menthol and Other Active Constituents of Menthol Mint (Mentha arvensis L.)

Author:
Aarifa Nabi; M. Naeem; Tariq Aftab; M. Masroor; A. Khan
Source:
Journal of essential oil-bearing plants 2019 v.22 no.5 pp. 1333-1348
ISSN:
0976-5026
Subject:
Mentha arvensis; acetates; antioxidants; arsenic; carotenoids; catalase; chlorophyll; dose response; essential oils; menthol; menthone; mint; peroxidase; photosynthesis; proline; sodium arsenate; soil; superoxide dismutase; toxicity
Abstract:
... The present investigation was premeditated to explore the toxic effects of arsenic (As) on an essential oil-bearing plant, the menthol mint (Mentha arvensis L.). Arsenic was applied in the form of sodium arsenate (Na₂HAsO₄.7H₂O) to the soil. Different concentrations of As (20, 40, 60, 80, and 100 mg kg⁻¹of soil) were applied and one set of plants was kept as control. The response of plants towards ...
DOI:
10.1080/0972060X.2019.1699865

66. Arsenic accumulation in Canna: Effect on antioxidative defense system

Author:
Ashish Praveen; Vimal Chandra Pandey; Sonali Mehrotra; Nandita Singh
Source:
Applied geochemistry 2019 v.108 pp. 104360
ISSN:
0883-2927
Subject:
Canna; antioxidant activity; antioxidants; arsenates; arsenic; cultivars; enzyme activity; geochemistry; harvesting; phytoaccumulation; roots; shoots
Abstract:
... Three Canna cultivars namely Canna red dazzler (CR), Canna flaccida (CF) and Canna cala lillies (CL) were selected to examine the uptake of arsenic and antioxidative response at four different arsenic concentrations (10, 20, 30 and 50 mg kg¯1). The study consisted of three harvestings at an interval of 45 days each, and at each harvest arsenic uptake and antioxidant activity were examined. The ars ...
DOI:
10.1016/j.apgeochem.2019.06.001

67. Arsenic accumulation in edible vegetables and health risk reduction by groundwater treatment using an adsorption process

Author:
Sara Spognardi; Ilenia Bravo; Claudio Beni; Patrizia Menegoni; Loris Pietrelli; Patrizia Papetti
Source:
Environmental science and pollution research international 2019 v.26 no.31 pp. 32505-32516
ISSN:
0944-1344
Subject:
Lactuca sativa; Raphanus sativus; adolescents; adsorption; arsenic; average daily intake; bioaccumulation; elderly; food chain; greenhouse production; groundwater; groundwater treatment; heavy metals; human health; irrigation; irrigation water; lettuce; people; radishes; risk; risk reduction; sodium arsenate; soil; toxicity; Italy
Abstract:
... The heavy metals transfer from the soil, where they accumulate, to the edible parts of the plants, and then, their entrance in the food chain can represent a source of concern for human health. Among heavy metals, arsenic is one of the most widespread in the soil of Lazio (central region of Italy), where the phytoavailable geogenic arsenic enters the food chain, with a dangerous exposition of the ...
DOI:
10.1007/s11356-019-06396-0

68. Arsenic adsorption and removal by a new starch stabilized ferromanganese binary oxide in water

Author:
Fangnan Xu; Huxing Chen; Yuxia Dai; Shuanglei Wu; Xianjin Tang
Source:
Journal of environmental management 2019 v.245 pp. 160-167
ISSN:
0301-4797
Subject:
Fourier transform infrared spectroscopy; X-ray photoelectron spectroscopy; adsorption; anions; arsenic; bicarbonates; chlorides; dispersants; iron; manganese; manganese oxides; nitrates; pH; polymers; starch; sulfates
Abstract:
... A new starch stabilized ferromanganese binary oxide (starch-FMBO) with an Fe/Mn ratio of 1.00–2.00 and a synthetic pH of 2 was prepared using an organic polymer (starch) as the stabilizing dispersant. The maximum arsenic adsorption capacity of starch-FMBO was 161.29 mg/g. Adsorption optimization was also conducted, which revealed that starch-FMBO had a high adsorption capacity over a wide pH range ...
DOI:
10.1016/j.jenvman.2019.05.071

69. Arsenic adsorption on Fe–Mn modified granular activated carbon (GAC–FeMn): batch and fixed-bed column studies

Author:
Jasmina Nikić; Jasmina Agbaba; Malcolm A. Watson; Aleksandra Tubić; Marko Šolić; Snežana Maletić; Božo Dalmacija
Source:
Journal of environmental science and health 2019 v.54 no.3 pp. 168-178
ISSN:
1532-4117
Subject:
Fourier transform infrared spectroscopy; X-ray diffraction; activated carbon; adsorbents; adsorption; anions; arsenic; carbonates; chlorides; desorption; energy-dispersive X-ray analysis; groundwater; leaching; ligands; models; nitrates; pH; phosphates; pollution load; scanning electron microscopy; sulfates
Abstract:
... Granular activated carbon (GAC) was modified with Fe–Mn binary oxide to produce a novel effective hybrid adsorbent (GAC–FeMn) for simultaneous removal of As(III) and As(V) from water. After characterization (including BET, SEM/EDS and XRD analyses) of the raw and modified GAC, FTIR analysis before and after As removal showed that ligand exchange was the major mechanism for As removal on GAC–FeMn. ...
DOI:
10.1080/10934529.2018.1541375

70. Arsenic and Sulfamethoxazole Increase the Incidence of Antibiotic Resistance Genes in the Gut of Earthworm

Author:
Hong-Tao Wang; Qiao-Qiao Chi; Dong Zhu; Gang Li; Jing Ding; Xin-Li An; Fei Zheng; Yong-Guan Zhu; Xi-Mei Xue
Source:
Environmental science & technology 2019 v.53 no.17 pp. 10445-10453
ISSN:
1520-5851
Subject:
antibiotic resistance; arsenates; arsenic; digestive system; earthworms; environmental science; intestinal microorganisms; quantitative polymerase chain reaction; sulfamethoxazole; technology
Abstract:
... Combinations of metal(loid) contamination and antibiotics are considered to increase the abundance of resistance genes in the environment, whereas the combined effect of metal(loid)s and antibiotics on microbial communities and antibiotic resistance genes (ARGs) in the gut of soil fauna remains unknown. We investigated herein the alteration of ARGs and the gut microbial communities after the earth ...
DOI:
10.1021/acs.est.9b02277

71. Arsenic and cadmium contents in Brazilian rice from different origins can vary more than two orders of magnitude

Author:
Lilian Seiko Kato; Elisabete A. De Nadai Fernandes; Andrea Raab; Márcio Arruda Bacchi; Joerg Feldmann
Source:
Food chemistry 2019 v.286 pp. 644-650
ISSN:
0308-8146
Subject:
arsenic; cadmium; cultivars; highlands; infants; laws and regulations; production technology; rice; Brazil
Abstract:
... Brazil is a major producer of rice, but there is not enough information about As and Cd in rice grown under different conditions in this country. Here, As and Cd were determined by ICP-MS and species of As by HPLC-ICP-MS in Brazilian husked rice, covering diverse cultivars and regions, as well as upland and flooded production systems. Significant differences were observed for contents of both elem ...
DOI:
10.1016/j.foodchem.2019.02.043

72. Arsenic and trace metals in a large reservoir: Seasonal and spatial variations, source identification and risk assessment for both residential and recreational users

Author:
Memet Varol
Source:
Chemosphere 2019 v.228 pp. 1-8
ISSN:
0045-6535
Subject:
United States Environmental Protection Agency; World Health Organization; arsenic; autumn; cadmium; carcinogenicity; chromium; drinking water; exposure pathways; factor analysis; guidelines; human health; ingestion; lead; manganese; principal component analysis; receptors; risk; risk assessment; rivers; seasonal variation; summer; Turkey (country)
Abstract:
... The Keban Dam Reservoir in Turkey is an internationally important reservoir, because it is located on the Euphrates River, which is an important transboundary river. Water samples were seasonally collected from 11 sampling sites on the reservoir between autumn 2014 and summer 2015. Spatial and seasonal variations, possible sources and health risks of dissolved trace metals (TMs) were investigated. ...
DOI:
10.1016/j.chemosphere.2019.04.126

73. Arsenic concentrations after drinking water well installation: Time-varying effects on arsenic mobilization

Author:
Melinda L. Erickson; Helen F. Malenda; Emily C. Berquist; Joseph D. Ayotte
Source:
Science of the total environment 2019 v.678 pp. 681-691
ISSN:
0048-9697
Subject:
aquifers; arsenic; bedrock; chronic exposure; drilling; drinking water; geochemistry; gravel; pH; public health; sand; water quality; wells; United States
Abstract:
... Chronic exposure to geogenic arsenic via drinking water is a worldwide health concern. However, effects of well installation and operation on arsenic concentrations and mobilization are not well understood. This knowledge gap impacts both reliable detection of arsenic in drinking water and effective public health recommendations to reduce exposure to arsenic. This study examines changes in arsenic ...
DOI:
10.1016/j.scitotenv.2019.04.362

74. Arsenic contamination in Kolkata metropolitan city: perspective of transportation of agricultural products from arsenic-endemic areas

Author:
Anirban Biswas; Shresthashree Swain; Nilanjana Roy Chowdhury; Madhurima Joardar; Antara Das; Meenakshi Mukherjee; Tarit Roychowdhury
Source:
Environmental science and pollution research international 2019 v.26 no.22 pp. 22929-22944
ISSN:
0944-1344
Subject:
adults; arsenates; arsenic; arsenites; children; crops; drinking; drinking water; eating habits; exposure pathways; food intake; foods; groundwater; household surveys; humans; markets; neoplasms; nutrient intake; rice; risk; risk assessment; soil; toxicity; transportation; vegetables; water pollution
Abstract:
... Arsenic exposure route for humans is through the drinking of contaminated water and intake of arsenic-contaminated foods, particularly in arsenic-exposed areas of Bengal delta. Transport of the arsenic-contaminated crops and vegetables grown using arsenic-contaminated groundwater and soil in arsenic-exposed areas to the uncontaminated sites and consequent dietary intakes leads to great threats for ...
DOI:
10.1007/s11356-019-05595-z

75. Arsenic contamination influences microbial community structure and putative arsenic metabolism gene abundance in iron plaque on paddy rice root

Author:
Min Hu; Weimin Sun; Valdis Krumins; Fangbai Li
Source:
Science of the total environment 2019 v.649 pp. 405-412
ISSN:
0048-9697
Subject:
DNA; Geobacter; Hydrogenophaga; arsenates; arsenic; community structure; enzymes; genes; iron; membrane proteins; metabolism; microbial communities; microorganisms; rhizosphere; ribosomal RNA; rice; roots
Abstract:
... Iron (Fe) plaque on rice roots contains a unique microbiota that connects the root and rhizosphere environments. However, the factors controlling the microbial community structure and function in Fe plaque are unknown. We performed Illumina sequencing of 16S rRNA gene amplicons and of total community DNA to compare the microbial community structure and metabolic potential of Fe plaques derived fro ...
DOI:
10.1016/j.scitotenv.2018.08.388

76. Arsenic contamination of rural community wells in Nicaragua: A review of two decades of experience

Author:
B. Gonzalez Rodriguez; L.C. Rietveld; A.J. Longley; D. van Halem
Source:
Science of the total environment 2019 v.657 pp. 1441-1449
ISSN:
0048-9697
Subject:
arsenic; desorption; drinking water; groundwater; poisoning; rural communities; surface water; surveys; volcanic rocks; wells; Nicaragua
Abstract:
... Several surveys have been conducted in Nicaragua between 1996 and 2015 confirming the presence of high levels of arsenic (>10 μg/L). In this paper, these peer-reviewed (n = 2) and non-peer reviewed sources (n = 14) have been combined to provide an extensive overview of the arsenic contamination of drinking water sources in Nicaragua. So far, arsenic contamination has been detected in over 80 rural ...
DOI:
10.1016/j.scitotenv.2018.12.168

77. Arsenic contamination, subsequent water toxicity, and associated public health risks in the lower Indus plain, Sindh province, Pakistan

Author:
Asfandyar Shahab; Shihua Qi; Muhammad Zaheer
Source:
Environmental science and pollution research international 2019 v.26 no.30 pp. 30642-30662
ISSN:
0944-1344
Subject:
adults; anthropogenic activities; arsenic; bicarbonates; children; cluster analysis; coal; drinking water; flooded conditions; groundwater; groundwater contamination; iron; microorganisms; minerals; mining; neoplasms; pesticides; physicochemical properties; principal component analysis; public health; risk; sorption; surface water; toxicity; Pakistan
Abstract:
... Arsenic (As) contamination in drinking water is a global public health risk. The present study highlighted the geological and anthropogenic causes of As contamination in groundwater (GW) and surface water (SW) and assessment of their potential health risks in Sindh province of Pakistan. Upon analyzing 720 GW and SW samples from 18 different sites, the estimates of As in groundwater and surface wat ...
DOI:
10.1007/s11356-018-2320-8

78. Arsenic detection in water using microfluidic detection systems based on the leucomalachite green method

Author:
Annija Lace; David Ryan; Mark Bowkett; John Cleary
Source:
Analytical methods 2019 v.11 no.42 pp. 5431-5438
ISSN:
1759-9679
Subject:
absorbance; analytical methods; arsenic; color; detection limit; iodates; iodine; malachite green; polymethylmethacrylate; pumps
Abstract:
... This work describes a novel system for arsenic detection in water using leucomalachite green dye in a microfluidic platform. A simplified leucomalachite green method was integrated into a microfluidic detection system. In acidic medium arsenic is reacted with potassium iodate to liberate iodine, which in turn oxidises leucomalachite green to malachite green forming a green colour associated with a ...
DOI:
10.1039/c9ay01580a

79. Arsenic detoxification in Eucalyptus: subcellular distribution, chemical forms, and sulfhydryl substances

Author:
Weisheng Wang; Min Meng; Lei Li
Source:
Environmental science and pollution research international 2019 v.26 no.24 pp. 24372-24379
ISSN:
0944-1344
Subject:
Eucalyptus grandis; Eucalyptus urophylla; acreage; adsorption; arsenic; cell walls; chelation; ethanol; glutathione; heavy metals; hybrids; hydroponics; leaves; phytochelatins; polluted soils; roots; sodium chloride; thiols; vacuoles; China
Abstract:
... The Eucalyptus cultivation acreage was large in Guangxi provinces. Guanglin 9 (Eucalyptus grandis × Eucalyptus urophylla) is a widely cultivated Eucalyptus species and has been found to grow normally in soils contaminated by heavy metals such as arsenic (As), but the detoxification mechanisms are not clear yet. Through hydroponic experiment, the adsorption and detoxification of As in Eucalyptus we ...
DOI:
10.1007/s11356-019-05701-1

80. Arsenic exposure and serum antibody concentrations to diphtheria and tetanus toxoid in children at age 5: A prospective birth cohort in Bangladesh

Author:
Barrett M. Welch; Adam Branscum; Sharia M. Ahmed; Perry Hystad; Ellen Smit; Sakila Afroz; Meghan Megowan; Mostofa Golam; Md Omar Sharif Ibne Hasan; Mohammad L. Rahman; Quazi Quamruzzaman; David C. Christiani; Molly L. Kile
Source:
Environment international 2019 v.127 pp. 810-818
ISSN:
0160-4120
Subject:
antibodies; arsenic; blood serum; childhood; children; confidence interval; drinking water; females; humoral immunity; immune response; immunoglobulin G; immunotoxicity; malnutrition; pregnancy; pregnant women; regression analysis; tetanus; toxoids; underweight; Bangladesh
Abstract:
... Arsenic can impair immune function. Timing of exposure can influence potential immunotoxicity of arsenic exposure. We examined the association between drinking water arsenic concentrations (W-As) measured repeatedly during different exposure windows in early life and serum concentrations of IgG antibodies against diphtheria and tetanus toxoids (diphtheria and tetanus antibody).A prospective cohort ...
DOI:
10.1016/j.envint.2019.04.015
PubMed:
31051324
PubMed Central:
PMC6513691

81. Arsenic exposure and young adult's mortality risk: A 13-year follow-up study in Matlab, Bangladesh

Author:
Mahfuzar Rahman; Nazmul Sohel; Fakir Md Yunus; Nurul Alam; Qamrun Nahar; Peter Kim Streatfield; Mohammad Yunus
Source:
Environment international 2019 v.123 pp. 358-367
ISSN:
0160-4120
Subject:
arsenic; boys; chronic exposure; cohort studies; computer software; drinking; drinking water; gender; girls; groundwater; monitoring; mortality; necropsy; neoplasms; public health; respiratory tract diseases; risk; young adults; Bangladesh
Abstract:
... Widespread arsenic contamination in underground water is a well-documented public health concern that threatens millions of lives worldwide. We investigated the risk of young-adult mortality due to high chronic exposure to arsenic through years of drinking arsenic contaminated water.A prospective cohort study of 58,406 individuals was enrolled who were 4–18 years at baseline. Since Matlab HDSS (He ...
DOI:
10.1016/j.envint.2018.12.006

82. Arsenic exposure of child populations in Northern Argentina

Author:
Marta Calatayud; Silvia Sara Farias; Gladys Soria de Paredes; Mónica Olivera; Natalia Ávila Carreras; Maria Cecilia Giménez; Vicenta Devesa; Dinoraz Vélez
Source:
Science of the total environment 2019 v.669 pp. 1-6
ISSN:
0048-9697
Subject:
DNA damage; adverse effects; arsenic; biomarkers; cacodylic acid; children; chronic exposure; creatinine; drinking water; metabolites; normal values; urine; Argentina
Abstract:
... Chronic exposure to inorganic arsenic (As) is associated with numerous adverse effects. Argentina is one of the countries affected by arsenicism; however, there are few studies that evaluate inorganic As exposure and its effects on child population. The aim of this study is to evaluate exposure to As through water and food in child populations living in the provinces of Santiago del Estero and Cha ...
DOI:
10.1016/j.scitotenv.2019.02.415

83. Arsenic fate in the Brahmaputra river basin aquifers: Controls of geogenic processes, provenance and water-rock interactions

Author:
Swati Verma; Abhijit Mukherjee; Chandan Mahanta; Runti Choudhury; Rakesh P. Badoni; Gopal Joshi
Source:
Applied geochemistry 2019 v.107 pp. 171-186
ISSN:
0883-2927
Subject:
alluvial aquifer; arsenic; basins; feldspar; geochemistry; groundwater; iron; mica; models; provenance; quartz; sediments; solutes; watersheds; weathering; Himalayan region
Abstract:
... The influence of aquifer sediments provenance and geochemical processes on groundwater solute chemistry, including the fate of groundwater arsenic (As) in aquifers for three distinct tectono-morphic zones (north-western, northern, and southern [NW, N, and S] in the basin of Himalayan Mega Rivers, i.e., Brahmaputra river basin (BRB), and adjoining the Himalayas and Indo-Burmese ranges, have been de ...
DOI:
10.1016/j.apgeochem.2019.06.004

84. Arsenic health risk assessment related to rice consumption behaviors in adults living in Northern Thailand

Author:
Penradee Chanpiwat; Kyoung-Woong Kim
Source:
Environmental monitoring and assessment 2019 v.191 no.11 pp. 674
ISSN:
0167-6369
Subject:
adults; arsenic; breakfast; dinner; glutinous rice; health effects assessments; households; lunch; oral exposure; Thailand
Abstract:
... The rice consumption behaviors of Thai citizens vary among regions. However, the influence of different consumption patterns on arsenic (As) exposure has never been reported. This study was conducted to investigate the effects of rice consumption behavior on As exposure levels. White rice (n = 96) and sticky rice (n = 63) samples were collected from local households in northern Thailand. The actua ...
DOI:
10.1007/s10661-019-7836-y

85. Arsenic immobilization through regulated ferrolysis in paddy field amendment with bismuth impregnated biochar

Author:
Ningyuan Zhu; Jun Qiao; Tingmei Yan
Source:
Science of the total environment 2019 v.648 pp. 993-1001
ISSN:
0048-9697
Subject:
X-radiation; X-ray diffraction; X-ray photoelectron spectroscopy; adsorption; arsenic; bioavailability; biochar; bismuth; coprecipitation; flooded conditions; ions; iron; iron oxides; iron oxyhydroxides; leaching; leukocytes; micropores; paddies; paddy soils; soil sampling; surface area; wheat straw
Abstract:
... Iron minerals are important for arsenic immobilization in paddy fields; however, intensive ferrolysis causes arsenic (As) release. Bismuth-impregnated biochar derived from wheat straw (BiBC) was synthesized to immobilize arsenic by regulating the ferrolysis process in a paddy field. Further X-ray based analysis (XRD and XPS) results demonstrated that crystal particles of bismuth oxide and bismuth ...
DOI:
10.1016/j.scitotenv.2018.08.200

86. Arsenic in Argentina: Occurrence, human health, legislation and determination

Author:
Marta I. Litter; Ana M. Ingallinella; Valentina Olmos; Marianela Savio; Gonzalo Difeo; Lía Botto; Elsa Mónica Farfán Torres; Sergio Taylor; Sofía Frangie; Jorge Herkovits; Isidoro Schalamuk; María José González; Eliana Berardozzi; Fernando S. García Einschlag; Prosun Bhattacharya; Arslan Ahmad
Source:
Science of the total environment 2019 v.676 pp. 756-766
ISSN:
0048-9697
Subject:
United States Environmental Protection Agency; World Health Organization; analytical methods; arsenic; at-risk population; bottled water; drinking water; equipment; groundwater; guidelines; human health; laws and regulations; metabolism; surveys; valleys; watersheds; Argentina
Abstract:
... An overview about the presence of arsenic (As) in groundwaters of Argentina, made by a transdisciplinary group of experts is presented. Aspects on As occurrence, effects of As on human health, regulations regarding the maximum allowable amount of As in drinking water as well as bottled water, and analytical techniques for As determination are presented. The most affected region in Argentina is the ...
DOI:
10.1016/j.scitotenv.2019.04.262

87. Arsenic in baby foods: health effects and dietary exposure

Author:
M. Medina-Pizzali; N. Damián-Bastidas; M. Vargas-Reyes
Source:
Quality assurance and safety of crops & foods 2019 v.11 no.4 pp. 369-380
ISSN:
1757-837X
Subject:
Codex Alimentarius; adults; arsenic; children; chronic exposure; dietary exposure; health effects assessments; infant formulas; infants; quality control; rice; risk assessment
Abstract:
... Health effects of arsenic in adults have been studied and documented more extensively than in infants and children, despite the fact that the younger population is more sensitive and is more exposed. Although rice has the highest concentrations of inorganic arsenic among foods, it is widely consumed by infants and children. The present article discusses the latest global literature on the presence ...
DOI:
10.3920/QAS2018.1477

88. Arsenic in cooked rice foods: Assessing health risks and mitigation options

Author:
Prasanna Kumarathilaka; Saman Seneweera; Yong Sik Ok; Andrew Meharg; Jochen Bundschuh
Source:
Environment international 2019 v.127 pp. 584-591
ISSN:
0160-4120
Subject:
Oryza sativa; arsenic; bioavailability; cooking; foods; gastrointestinal system; humans; nutrient content; paddy soils; rice; risk; washing; water harvesting
Abstract:
... Human exposure to arsenic (As) through the consumption of rice (Oryza sativa L.) is a worldwide health concern. In this paper, we evaluated the major causes for high inorganic As levels in cooked rice foods, and the potential of post-harvesting and cooking options for decreasing inorganic As content in cooked rice, focusing particularly on As endemic areas. The key factors for high As concentratio ...
DOI:
10.1016/j.envint.2019.04.004

89. Arsenic in drinking water—recent examples and updates from Southeast Asia

Author:
Jagdeesh S. Uppal; Qi Zheng; X. Chris Le
Source:
Current opinion in environmental science & health 2019 v.7 pp. 126-135
ISSN:
2468-5844
Subject:
World Health Organization; adverse effects; arsenic; cardiovascular diseases; chronic exposure; diabetes; drinking; drinking water; guidelines; neoplasms; people; public health; risk; Bangladesh; Cambodia; China; India; Myanmar; Nepal; Pakistan; Vietnam
Abstract:
... Arsenic affects hundreds of millions of people around the world, with majority of the arsenic-affected populations living in Southeast Asia. Recent reports estimated that population exposed to water arsenic at concentrations higher than the World Health Organization guideline level of 10 μg/L or higher than 50 μg/L included 70–80 million people living in India, 28–60 million in Bangladesh, 47–60 m ...
DOI:
10.1016/j.coesh.2019.01.004

90. Arsenic in groundwater in private wells in rural North Dakota and South Dakota: Water quality assessment for an intervention trial

Author:
Martha Powers; Joseph Yracheta; David Harvey; Marcia O’Leary; Lyle G. Best; Annabelle Black Bear; Luke MacDonald; Jolie Susan; Khaled Hasan; Elizabeth Thomas; Camille Morgan; Pablo Olmedo; Rui Chen; Ana Rule; Kellogg Schwab; Ana Navas-Acien; Christine Marie George
Source:
Environmental research 2019 v.168 pp. 41-47
ISSN:
0013-9351
Subject:
United States Environmental Protection Agency; arsenic; atomic absorption spectrometry; filtration; groundwater; households; private ownership; randomized clinical trials; screening; silica; water quality; wells; North Dakota; South Dakota
Abstract:
... Elevated exposure to arsenic disproportionately affects populations relying on private well water in the United States (US). This includes many American Indian (AI) communities where naturally occurring arsenic is often above 10 µg/L, the current US Environmental Protection Agency safety standard. The Strong Heart Water Study is a randomized controlled trial aiming to reduce arsenic exposure to pr ...
DOI:
10.1016/j.envres.2018.09.016
PubMed:
30261340
PubMed Central:
PMC6296218

91. Arsenic in the waters and sediments of the Humboldt River, North-Central Nevada, USA: hydrological and mineralogical investigation

Author:
Shahnewaz Mohammad; Regina N. Tempel
Source:
Environmental earth sciences 2019 v.78 no.17 pp. 543
ISSN:
1866-6280
Subject:
arsenic; clay minerals; dissolved oxygen; electrical conductivity; evaporation; factor analysis; geochemistry; hydrochemistry; pH; redox potential; river water; rivers; scanning electron microscopy; sediments; stream channels; sulfide minerals; Nevada
Abstract:
... Arsenic (As) concentration in the Humboldt River (HR) water ranges from 0.012 to 0.06 mg/L, with an average of 0.032 mg/L. The river water is alkaline with pH 8.4–9.3 and oxic with average 12 mg/L of dissolved O₂ and + 139 mV of oxidation–reduction potential (ORP). The river water contains an average specific electrical conductivity of 1000 µS/cm with elevated B (average 0.77 mg/L), Li (average 0. ...
DOI:
10.1007/s12665-019-8552-1

92. Arsenic redistributive accretion in interdune marshes and its impact on groundwater contamination of coastal plains (southern Brazil)

Author:
Ingrid Horák-Terra; Nicolai Mirlean; Alexandre Henrique Ferraz
Source:
Environmental earth sciences 2019 v.78 no.16 pp. 515
ISSN:
1866-6280
Subject:
aquifers; arsenic; chemical reduction; coastal plains; desorption; drinking; drinking water; eolian sands; freshwater marshes; groundwater; groundwater contamination; hydroxides; iron; manganese; organic carbon; pH; principal component analysis; Brazil
Abstract:
... Excessive concentrations of arsenic in aquifers have been presented for the first time in the southern Brazilian coastal plain. In this region, the shallow aquifers are mainly constituted by a mosaic distribution of marsh sediment lenses formed in the interdune depressions in past times and subsequently covered by eolian sands. The stratigraphic descriptions and analytical determinations in water ...
DOI:
10.1007/s12665-019-8531-6

93. Arsenic removal by copper-impregnated natural mineral tufa part II: a kinetics and column adsorption study

Author:
Krstimir Pantić; Zoran J. Bajić; Zlate S. Veličković; Jovica Z. Nešić; Maja B. Đolić; Nataša Z. Tomić; Aleksandar D. Marinković
Source:
Environmental science and pollution research international 2019 v.26 no.23 pp. 24143-24161
ISSN:
0944-1344
Subject:
adsorbents; adsorption; arsenic; diffusivity; dose response; geometry; mass transfer; models; particle size; phosphates; porosity; silicates
Abstract:
... This batch and column kinetics study of arsenic removal utilized copper-impregnated natural mineral tufa (T–Cu(A–C)) under three ranges of particle size. Non-competitive kinetic data fitted by the Weber–Morris model and the single resistance mass transfer model, i.e., mass transfer coefficient kfa and diffusion coefficient (Dₑff) determination, defined intra-particle diffusion as the dominating ra ...
DOI:
10.1007/s11356-019-05547-7

94. Arsenic removal from alkaline leaching solution using Fe (III) precipitation

Author:
Yongliang Wang; Cuicui Lv; Li Xiao; Guoyan Fu; Ya Liu; Shufeng Ye; Yunfa Chen
Source:
Environmental technology 2019 v.40 no.13 pp. 1714-1720
ISSN:
1479-487X
Subject:
arsenates; arsenic; chemical precipitation; crystal structure; gold; ions; iron; leaching; pH; particle size; temperature; toxicity; toxicity testing
Abstract:
... The alkaline leaching solution from arsenic-containing gold concentrate contains a large amount of arsenate ions, which should be removed because it is harmful to the production process and to the environment. In this study, conventional Fe (III) precipitation was used to remove arsenic from the leaching solution. The precipitation reaction was carried out at the normal temperature, and the effect ...
DOI:
10.1080/09593330.2018.1429495

95. Arsenic removal from aqueous solutions and groundwater using agricultural biowastes-derived biosorbents and biochar: a column-scale investigation

Author:
Riaz Ahmad Tabassum; Muhammad Shahid; Nabeel Khan Niazi; Camille Dumat; Yongqing Zhang; Muhammad Imran; Hafiz Faiq Bakhat; Imtyaz Hussain; Sana Khalid
Source:
International journal of phytoremediation 2019 v.21 no.6 pp. 509-518
ISSN:
1549-7879
Subject:
Fourier transform infrared spectroscopy; World Health Organization; aqueous solutions; arsenic; banana peels; biochar; biosorbents; drinking water; groundwater; laboratory experimentation; moieties; orange peels; phytoremediation; rice hulls; soluble salts
Abstract:
... In this study, column-scale laboratory experiments were performed to evaluate the arsenic (As) removal efficiency of different agricultural biowastes-derived biosorbents (orange peel, banana peel, rice husk) and biochar, using As-containing solutions and As-contaminated groundwater. All the biosorbents and biochar efficiently removed (50–100%) As from groundwater (drinking well water). Arsenic rem ...
DOI:
10.1080/15226514.2018.1501340

96. Arsenic removal from flooded paddy soil with spontaneous hygrophyte markedly attenuates rice grain arsenic

Author:
Xin Wang; Rui Huang; Liang Li; Sixue He; Lu Yan; Hao Wang; Xin Wu; Yulong Yin; Baoshan Xing
Source:
Environment international 2019 pp. -
ISSN:
0160-4120
Subject:
Oryza sativa; arsenic; bioavailability; cost effectiveness; crop production; disturbed soils; drainage; films (materials); food safety; hydroxides; iron; mining; paddy soils; plowing; rice; soil profiles; China
Abstract:
... China ranks the top in global annual rice output. However, extensive mining and smelting has led to elevated arsenic (As) in paddy soils, potentially imperiling local population health and sustainable rice production in the country. Under flooded condition, reductive As mobilization generally occurs, providing a unique advantage for soil As removal. In this study, we explore the depletion magnitud ...
DOI:
10.1016/j.envint.2019.105159

97. Arsenic removal from geothermal influenced groundwater with low pressure NF pilot plant for drinking water production in Nicaraguan rural communities

Author:
Bayardo Gonzalez; S.G.J. Heijman; L.C. Rietveld; D. van Halem
Source:
Science of the total environment 2019 v.667 pp. 297-305
ISSN:
0048-9697
Subject:
Gibbs free energy; World Health Organization; anions; arsenic; drinking water; electricity; groundwater; guidelines; laundry; nanofiltration; rural areas; rural communities; solar collectors; temperature; Nicaragua
Abstract:
... This research evaluated the effect of different fluxes (16, 23 & 30 L/m2 h) and temperatures (31,35 & 43 °C) on the rejection of As(V) during nanofiltration (NF) of natural geothermal influenced groundwater in Nicaragua. A NF pilot plant powered by solar panels was built and operated in rural community Telica, exposed to As-rich drinking water sources due to geothermal influences. The results show ...
DOI:
10.1016/j.scitotenv.2019.02.222

98. Arsenic removal using Chlamydomonas reinhardtii modified with the gene acr3 and enhancement of its performance by decreasing phosphate in the growing media

Author:
Angélica E. Ramírez-Rodríguez; Bernardo Bañuelos-Hernández; Mariano J. García-Soto; Dania G. Govea-Alonso; Sergio Rosales-Mendoza; M. Catalina Alfaro de la Torre; Elizabeth Monreal-Escalante; Luz M. T. Paz-Maldonado
Source:
International journal of phytoremediation 2019 v.21 no.7 pp. 617-623
ISSN:
1549-7879
Subject:
Agrobacterium radiobacter; Chlamydomonas reinhardtii; Pteris vittata; arsenates; arsenic; cost effectiveness; genes; groundwater contamination; growing media; metals; microalgae; phosphates; phytoremediation; toxicity; Mexico
Abstract:
... Arsenic contamination of groundwater is a significant problem in countries like Mexico, where San Luis Potosi is among the regions registering severe levels of it. Bioremediation with microalgae capable to absorb and metabolize metals or metalloids like arsenic reduces their toxicity and is a cost-effective approach compared to physical–chemical processes. We evaluated the capability of Chlamydomo ...
DOI:
10.1080/15226514.2018.1546274

99. Arsenic respiration and detoxification by purple non-sulphur bacteria under anaerobic conditions

Author:
Hira Saleem; Qurat ul Ain Kokab; Yasir Rehman
Source:
Comptes rendus 2019 v.342 no.3-4 pp. 101-107
ISSN:
1631-0691
Subject:
Rhodospirillum; anaerobic conditions; arsenic; bacteria; bioremediation; carotenoids; citrates; hydrogen; hydrogen production; lactic acid; oxalates; paddies; ribosomal RNA; sequence analysis
Abstract:
... Two arsenic-resistant purple non-sulphur bacteria (PNSB), Q3B and Q3C, were isolated (from industrial contaminated site and paddy fields) and identified by SSU rRNA gene sequencing as Rhodospirillum and Rhodospirillaceae species, respectively. Maximum arsenic reduction by these PNSB was observed in anaerobic conditions. Rhodospirillum sp. Q3B showed 74.92% (v/v) arsenic reduction while Rhodospiril ...
DOI:
10.1016/j.crvi.2019.02.001

100. Arsenic speciation in aerosols of a respiratory therapeutic cave: A first approach to study arsenicals in ultrafine particles

Author:
Stefan Tanda; Roman Ličbinský; Jitka Hegrová; Jiří Faimon; Walter Goessler
Source:
Science of the total environment 2019 v.651 pp. 1839-1848
ISSN:
0048-9697
Subject:
aerosols; air; arsenic; arsenicals; human health; nanoparticles; therapeutics; toxicity
Abstract:
... Arsenic is ubiquitous in the environment and of special concern due to its varying toxicity depending on the chemical form present. Less is known about arsenic in air, especially about organoarsenicals, their sources and fate. There is also a lack of knowledge regarding arsenic in airborne nanoparticles that are critical for understanding with respect to human health effects due to their size. Her ...
DOI:
10.1016/j.scitotenv.2018.10.102