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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 ...
... The area of Ponce Enríquez, Southern Ecuador, is one of the most important artisanal and small scale gold mining (ASGM) areas in the country, where informal mining operations can be found using amalgamation technique, even though it has been prohibited since 2010. Considering the potential impact of these mining operations, the present research focused on heavy metal pollutants in subsurfac ...
Pawel Dabrowski; Michal Jerzy Kulus; Agata Cieslik; Zygmunt Domagala; Rafał J. Wiglusz; Piotr Kuropka; Jan Kuryszko; Agata Thannhauser; Lukasz Szleszkowski; Piotr Marian Wojtulek; Daniel Solinski; Piotr Dziegiel
... Venereal syphilis is a sexually transmitted disease caused by Treponema pallidum – Gram-negative, slowly growing bacteria. The spread of the disease in the Old World was due to increased birth rate, urban population growth, migration and lack of knowledge concerning the epidemiology. In the past, the treatment was mainly symptomatic and included application of mercury compounds. The goal of the st ...
... An analytical method for the biomonitoring of arsenic, benzene and polycyclic aromatic hydrocarbons (PAHs) in human urine was developed using liquid chromatography tandem mass spectrometry (LC-MS/MS). The urinary metabolites of monomethylarsonic acid (MMAA), dimethylarsonic acid (DMAA), s-phenylmercapturic acid (S-PMA), and 1-hydroxypyrene (1-OHP) were selected as the corresponding marker compound ...
... Production of acid mine drainage (AMD) and acid sulfate soils is one of the most concerning environmental consequences associated with mining activities. Implementation of appropriate post-mining AMD management practices is very important to minimize environmental impacts such as high soil acidity, soil erosion, and metal leachability. The objective of this study was to develop a cost-effective an ...
arsenic; biomarkers; creatinine; data collection; drinking water; environmental exposure; osmolality; specific gravity; urine; United Kingdom
Abstract:
... Spot urinary concentrations of environmental exposure biomarkers require correction for dilution. There is no consensus on the most appropriate method, with creatinine used by default despite lacking theoretical robustness. We comparatively assessed the efficacy of creatinine; specific gravity (SG); osmolality and modifications of all three for dilution correcting urinary arsenic. For 202 particip ...
arsenic; bioavailability; carcinogenicity; comparative study; particle size; particulates; risk; China
Abstract:
... The distribution and bioavailability of arsenic (As) in indoor/outdoor total suspended particulates (TSP), inhalable particulate matters (PM₁₀), and fine particulate matters (PM₂.₅) in Baoding, China were investigated. The average I/O ratios for TSP, PM₁₀, and PM₂.₅ were 0.52, 0.66, and 0.96, respectively. There was no significant correlation between indoor/outdoor TSP, PM₁₀, and PM₂.₅. The indoor ...
... Arsenic(As)-mediated contamination of groundwater resources in different parts of the world is a consequence of natural or anthropogenic sources, leading to adverse effects on the environment and human health. Millions of people from different countries are unfortunately consuming groundwater contaminated with alarming levels of As. Exposure to the high concentration of As for an extended period o ...
Monte Carlo method; arsenic; carcinogenicity; ingestion; potatoes; risk; soil; tomatoes; wheat; Turkey (country)
Abstract:
... Natural arsenic contamination is a critical problem for various places around the world. Simav Plain (Kutahya, Turkey) is one such area that was shown to have natural arsenic contamination in its waters and soils. Arsenic exposure through ingestion of edible crops cultivated in Simav Plain and associated health risks were assessed in this study. To achieve this objective, arsenic levels in 18 crop ...
arsenic; biochar; boreal forests; cadmium; composts; copper; diammonium phosphate; field capacity; forest soils; human health; lead; organic matter; remediation; toxicity; water content; zinc
Abstract:
... Metal-contaminated soils present a great threat to natural ecosystems and human health. Remediation studies focusing on metal-polluted soils with high organic matter (OM > 20%) are limited. This study evaluated the effectiveness of biochar, compost, diammonium phosphate (DAP), and iron oxides (Fe-O), in immobilizing metals from an OM-rich boreal forest soil contaminated with arsenic (As), cadmium ...
... Agaricus brasiliensis, an edible mushroom with medicinal properties, has a tendency to accumulate high concentrations of heavy metals, especially cadmium. To address this issue, strains with low Cd accumulation must be developed. To breed a low-Cd-accumulating, high yield, and high-quality strain, mycelial fragments of A. brasiliensis were mutagenized with different doses of 60Co-γ-irradiation. Th ...
... A sensitive and selective fluorimetric method for the rapid determination of trace amounts of As(III)/As(V) species in certain tea samples forms the basis of the study. 3′,6′-bis(diethylamino)-2-{[(1E)-(4,5-dimethyl-2-furyl)methylene]amino}spiro[isoindole-1,9′-xanthen]-3(2H)-one (DMBD), was synthesized and characterized as a new fluorescence reagent for the speciation of As(III)/As(V) species. As( ...
... A novel direct sampling (DS-HG) system consisting of an enlarged gas liquid separator (GLS) coupled with a foam breaker was firstly utilized for the in-situ dielectric barrier discharge atomic fluorescence spectrometer (DBD-AFS). After direct dilution using 5% HCl (v:v), a prepared blood sample was introduced into the DS-HG with a UV digestion unit, of which arsenic hydrides directly generated fro ...
aluminum; ammonia; arsenic; cadmium; chromium; cobalt; copper; detection limit; fruit quality; fruit wines; gases; hydrogen; iron; lead; manganese; mercury; nickel; nitric acid; oxygen; tandem mass spectrometry; vanadium; zinc
Abstract:
... The composition of inorganic elements is a key factor in determining the quality of fruit wines. However, the use of direct sample injection is challenging for multi-elemental analysis of fruit wine samples. In this paper, an analytical method using inductively coupled plasma tandem mass spectrometry (ICP-MS/MS) was established for determining multiple elements (Al, V, Cr, Mn, Fe, Co, Ni, Cu, Zn, ...
adverse effects; aluminum; arsenic; bromine; case studies; geology; human health; iron; nickel; Turkey (country)
Abstract:
... Public fountains are very common and everyday people appreciate the benefits a water fountain can bring. However, consumption of public fountain water in some country has decreased because of growing concerns that constituents in fountain water may have adverse effects on health. A few studies have examined the safety of public fountains, proposing only limited evidence of fountain‐related health ...
... Arsenic (As) is a carcinogenic element threatening the health of millions of people around the world. The sources for human exposure include drinking water, crops, processed food items, vegetables, mushrooms, animal products etc. The people at most risk are those living in hotspots of As contamination viz., Bangladesh and West Bengal, India. However, it has been found that rice growing in other un ...
... A simple and novel method was developed at first time to enhance As (V) removal by zero valent iron (ZVI) and activated ZVI/Fe3O4 media (AIM) through air injection at intervals. Fe (II) was essential to trigger As (V) removal by ZVI and AIM, and magnetite did not improve As (V) removal. In presence of 0.5 mM Fe (II) under anaerobic condition, 10 g L−1 ZVI and AIM showed same As (V) removal efficie ...
arsenic; cluster analysis; heat; models; mortality; regression analysis; risk factors; urinary bladder neoplasms; United States
Abstract:
... Bladder cancer is a significant health issue across the United States of America (USA). Evidence of unequal distribution of a disease or condition's incidence and mortality would suggest that important geographically-defined variables may play a role. In this study, a spatial cluster analysis of bladder cancer mortality identified significant hot spots in some parts of the USA. Regression analysis ...
... Cadmium (Cd) and arsenic (As) are nonessential and toxic elements in rice that often occur together in contaminated paddy field soils. To understand whether rice has a common molecular response mechanism against Cd and As toxicity, 30-day seedlings (Oryza sativa L. indica) were exposed separately to Cd and As3+ in hydroponic cultures for up to 7 days. Root transcriptomic analysis of plants exposed ...
... 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 ...
... 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 ...
... 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 ...
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 ...
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 ...
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
... 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 ...
... 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). ...
... 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 ...
... 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 ...
... 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 ...
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) ...
... 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 ...
... Metal pollution is a global problem, which threatens to seriously disrupt behavioral patterns and health in humans and wildlife. Nonetheless, little is known regarding how exposure to metal pollution affects animal personalities, as defined by repeatable among individual differences in behavior. We used a large dataset to investigate the relationship between individual blood and feather metal conc ...
... Sequential extraction schemes (SES) were evaluated to investigate the fractionation of Al, As, Cd, Cs, Cr, Co, Cu, Fe, Mn, Mo, Pb, Sr, U and Zn between the different mineral phases in iron oxide rich deposits of a former uranium mining site. Ineffective dissolution of iron oxide was observed when applying the BCR sequential extraction scheme. The hydroxylamine hydrochloride reagent in nitric acid ...
World Health Organization; aquifers; arsenic; cadmium; chromium; drinking water; groundwater; groundwater contamination; growth and development; human health; iron; lead; mercury; pumps; risk; water quality; zinc; India
Abstract:
... Groundwater is a vital natural resource needed for the growth and development of life on the Earth. The aim of the present study was to estimate trace elements concentration in groundwater and their effect on human health in Saharanpur district, Uttar Pradesh, India. Groundwater samples were collected from the government hand pumps and analyzed for eight trace elements using ICP-MS. In all the sam ...
... In this study we reported the development of a paper-based algal biosensor for the optical detection of nanoencapsulated-atrazine, a forefront nanoformulated herbicide with a high effective post-emergence herbicidal activity. In particular, the unicellular green photosynthetic algae Chlamydomonas reinhardtii was immobilised on a paper substrate soaked with an agar thin film and placed in a glass o ...
... As a result of anthropization and industrialization, northern remote communities face issues of soil contamination by mixtures of organic and inorganic contaminants. Soil bioremediation in cold environments is particularly challenging because of slower degradation rates, slower production of biomass for phytoextraction of trace elements (TEs), and remoteness, which can complicate logistics and inf ...
Tania Zacaria Vital; Brenda Román-Ponce; Flor N. Rivera Orduña; Paulina Estrada de los Santos; M. Soledad Vásquez-Murrieta; Yue Deng; Hong Li Yuan; En Tao Wang
... Aiming at revealing the arsenic (As) resistance of the endophytic Kocuria strains isolated from roots and stems of Sphaeralcea angustifolia grown at mine tailing, four strains belonging to different clades of Kocuria based upon the phylogeny of 16S rRNA genes were screened for minimum inhibitory concentration (MIC). Only the strain NE1RL3 was defined as an As-resistant bacterium with MICs of 14.4/ ...
... The aim of this study was to determine the bioavailability of metals in field soils contaminated with chromated copper arsenate (CCA) mixtures. The uptake and elimination kinetics of chromium, copper, and arsenic were assessed in the earthworm Eisenia andrei exposed to soils from a gradient of CCA wood preservative contamination near Hartola, Finland. In soils contaminated with 1480–1590 mg Cr/kg ...
... 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 ...
... 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 ...
... 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 ...
... 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 ...
... 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 ...
... 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 ...
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 ...
... 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 ...
... 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 ...
... 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 ...
... 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 ...
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 ...
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 ...
... 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 ...
... 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 ...
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 ...
... 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 ...
... 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 ...
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 ...
... 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 ...
... 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 ...
... 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 ...
... 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 ...
... 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 ...
... 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 ...
... 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 ...
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 ...
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. ...
... 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 ...
... 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 ...
... 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 ...
... 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 ...
Marta Calatayud; Silvia Sara Farias; Gladys Soria de Paredes; Mónica Olivera; Natalia Ávila Carreras; Maria Cecilia Giménez; Vicenta Devesa; Dinoraz Vélez
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 ...
... 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 ...
... 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 ...
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
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 ...
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 ...
... 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 ...
... 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 ...
Boletus edulis; Tricholoma matsutake; arsenic; atomic absorption spectrometry; bioavailability; gel chromatography; human health; in vitro studies; ion exchange chromatography; microwave treatment; molecular weight; monitoring; mushrooms; China
Abstract:
... This study concerns total arsenic (TAs) and arsenic species determination in three species of mushrooms collected in Yunnan, China. The purpose of this study was to check concentration level of arsenic in Boletus edulis, Tricholoma matsutake and Suillellus luridus, estimate arsenic bioaccessibility and find out which arsenic species occur in mushrooms to assess if they may pose a threat to human h ...
... The present study is about surface complexation behavior of arsenic species adsorbed onto ternary metal oxide adsorbents (Ni-Al-Fe, Co-Al-Fe, Mn-Al-Fe, and Cu-Al-Fe). The analysis is carried out by X-ray absorption spectroscopy (XAS) tool. XANES (μ(E) vs. E) spectra close to the absorption edge (i.e., As K-edge) of all samples are observed along with the As(III) and As(V) standards. The first deri ...
... Arsenic (As) is a non-threshold human carcinogenic. This element can be volatilized either by nature or anthropogenic sources. In the present study, the analytical performance of an As volatile species trapping system was evaluated to assess the As volatilization promoted by Penicillium sp. and Aspergillus sp., both isolated from rice rhizosphere, and Aspergillus niger sp. considered as a referenc ...
... We investigated the potential role of Fe-Mn-modified biochar composites (FMBCs) in the volatilization of toxic arsenic (As) in flooded paddy soil, by considering As fractionation, enzyme activities, and bacterial abundance. The results indicated that the addition of FMBCs reduced As volatilization from polluted soil, and this effect was more pronounced at higher dosages. Two types of FMBCs (i.e., ...
... Historic As contamination of soils occurs throughout the world from mining, industrial and agricultural activities. Sorption processes and rate may strongly influence soil As mobility, which further influences As bioavailability and toxicity. We investigated the kinetics of As(V) sorption by adding the arsenic onto both pristine (non-contaminated) and historically contaminated soils from arsenical ...
... Livers of 25 common garter snakes (Thamnophis sirtalis) from Minnesota (2015–16) were analyzed for heavy metals by inductively coupled plasma atomic emission spectroscopy. Dry weight mean concentrations (ranges µg/g) were arsenic, 118.94 (0.26–1245.56); cadmium, 1.44 (0.15–7.59); lead, 0.21 (<0.10–0.78); and mercury, 0.30 (<0.5–2.25). ...
... Increased metal mining in the Arctic region has caused elevated loads of arsenic (As), antimony (Sb), nickel (Ni), and sulfate (SO₄²⁻) to recipient surface or groundwater systems. The need for cost-effective active and passive mine water treatment methods has also increased. Natural peatlands are commonly used as a final step for treatment of mining influenced water. However, their permanent reten ...
Genidens; anadromous fish; arsenic; carcinogenicity; catfish; cobalt; estuaries; fish consumption; guidelines; health effects assessments; iron; liver; muscles; public health; risk; risk estimate; selenium; tissues; zinc; Argentina; Atlantic Ocean; Brazil
Abstract:
... The anadromous catfish Genidens barbus is a vulnerable and economically important species from the Southwestern Atlantic Ocean. Concentrations of As, Co, Fe, Se, and Zn were determined in water and muscle, gill, and liver of catfish from two southwestern Atlantic estuaries (Brazil and Argentina) and health risk via fish consumption was evaluated. High spatial variability was observed in the metals ...
... Chronic exposure to arsenic via drinking water throughout the globe is assumed to cause a developmental neurotoxicity. Here, we investigated the effect of perinatal arsenic exposure on the neurobehavioral and neurochemical changes in the corpus striatum, frontal cortex, and hippocampus that is critically involved in motor and cognition functions. In continuation of previous studies, this study dem ...
... Although arsenic (As) is recognized as a toxic element for living species, some microorganisms have the ability to tolerate and transform it; recent studies have proposed to take advantage of such capacity to develop sustainable bioremediation strategies. In this study, we evaluated the adaptation to increasing concentrations of As(III) and As(V) of three metabolically different microbial cultures ...
aquifers; arsenic; basins; groundwater; groundwater contamination; human health; iron; prediction; public health; risk; Bangladesh; India
Abstract:
... Arsenic (As) contamination of groundwater in the Ganga–Brahmaputra–Meghna basin of India and Bangladesh poses severe risk to human health and the environment. Arsenic in the groundwater of this area is largely geogenic, derived from the microbial reductive dissolution of iron (Fe) oxyhydroxide and subsequent release of the sorbed As. The present study examined the correlation between As and Fe in ...
... Arsenic mobility in soils, sediments and groundwater systems is strongly controlled by adsorption occurring at iron oxide/water interfaces, and the extent of this adsorption may be influenced by the presence of natural organic matter (NOM). This study aims to investigate the adsorption of As(III) and As(V) onto coprecipitates made with ferrihydrite (Fh) and humic acid (HA) with two organic carbon ...
Đenana Miodragović; Antonello Merlino; Elden P. Swindell; Abraham Bogachkov; Richard W. Ahn; Sara Abuhadba; Giarita Ferraro; Tiziano Marzo; Andrew P. Mazar; Luigi Messori; Thomas V. O’Halloran
DNA; arsenic; arsenic oxide; blood; chemical bonding; cisplatin; human cell lines; humans; models; moieties; neoplasm cells; neoplasms; pharmacology; platinum; proteins
Abstract:
... Arsenoplatins are adducts of two chemically important anticancer drugs, cisplatin and arsenic trioxide, that have a Pt(II) bond to an As(III) hydroxide center. Screens of the NCI-60 human tumor cell lines reveal that arsenoplatin-1 (AP-1), [Pt(μ-NHC(CH₃)O)₂ClAs(OH)₂], the first representative of this novel class of anticancer agents, displays a superior activity profile relative to the parent drug ...
... Now a day's biosorbents with magnetic properties have been applied for water and wastewater treatment process, because of its magnetic nature it can be easily separated and can be reused more than one time. In the present study, two magnetic biosorbents were synthesized from waste biomass of Citrus limetta (peel and pulp) at 500 °C temperature represented as PAC-500 and PPAC-500. These biosorbents ...
... Water pollution by human activities is a global environmental problem that requires innovative solutions. Arsenic and chromium oxyanions are toxic compounds, introduced in the environment by both natural and anthropogenic activities. In this review, the speciation diagrams of arsenic and chromium oxyanions in aqueous solutions and the analytical methods used for their detection and quantification ...
... Arsenic contamination in drinking water is a matter of concern for many countries. An efficient and low-cost solution for this hazard is essentially needed on urgent basis. Therefore, in this study, banana pith (an agricultural waste) was used for biochar production and later it was modified with iron and applied for arsenic adsorption from aqueous solution. Produced biochar was characterized for ...
... The cementation complex of Las Viñas (SW Spain) is a partially reclaimed abandoned mine site located in the drainage basin of a water reservoir currently under construction. The aim of this investigation was to analyze these mine soils to evaluate their potential environmental impact, especially on the final reservoir water quality. Results evidence the extremely high acidity of soils (pH of 3.4 a ...
... Assessment of trace element levels in general population from the specific area is of importance for nutritional and occupational monitoring. In the current study, baseline blood levels of 12 toxic and/or essential metals and metalloids, including arsenic (As), cadmium (Cd), lead (Pb), mercury (Hg), chromium (Cr), thallium (Tl), manganese (Mn), copper (Cu), Zinc (Zn), calcium (Ca), iron (Fe), and ...
... The lake ecosystems on the Yunnan-Guizhou Plateau in China have degraded in recent decades under the effects of anthropogenic activities and climate change. The human impact on the oligotrophic Lugu Lake aquatic ecosystem was evaluated using the sediment records of metals, nitrogen isotopes (δ15N) and magnetic susceptibility over the past 200 years. Three periods were identified based on the ...
arsenic; basins; freshwater; groundwater; hydrogeochemistry; issues and policy; lowlands; multivariate analysis; nitrates; pH; risk; saline water; salt lakes; stable isotopes; water management; water quality; water salinization; water supply; China
Abstract:
... Dramatic decreases in groundwater quality have raised widespread concerns about water supplies and ecological crises in China. In this study, hydrochemistry, stable isotopes, and graphical and multivariate statistical methods are integrated to identify hydrogeochemical processes controlling groundwater quality in the Yuncheng Basin, China. Our results show that groundwater with 21 variables (pH, t ...
... The purpose of this study was to evaluate the current status of metal concentrations in soil from Zhuhai City. We detected the concentrations of eight metal elements in 67 topsoil samples collected from three typical land use types (water source land, n = 27; industrial land, n = 25; and farmland, n = 15) in Zhuhai. Multivariate geostatistical analyses indicated that the concentrations of Cu, Zn, ...
... The natural soil, processing products, and wastes generated in a colemanite mining site were studied according to their mineral structures, contents of As, Cr, Cu, Ni, Mn, Zn, Al, and Fe. The possible sources, chemical distributions, and the mobilization behaviors of the metals and the correlations between the metal mobilization ratios and their chemical partitioning were also examined and evaluat ...
... A comprehensive approach has been developed to the assessment of composition and properties of atmospherically deposited dust in the area affected by a copper smelter. The approach is based on the analysis of initial dust samples, dynamic leaching of water soluble fractions in a rotating coiled column (RCC) followed by the determination of recovered elements and characterization of size, morpholog ...