U.S. flag

An official website of the United States government

Dot gov

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Https

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

PubAg

Main content area

You searched for: Subject term arsenic Remove constraint Subject term: arsenic Text availability Citation in PubAg Remove constraint Text availability: Citation in PubAg
Start Over

Search

20,221  Search Results

« Previous | 1 - 20 of 20,221 |
Number of results to display per page

Search Results

1.   Antioxidative mechanisms on selenium accumulation in Pteris vittata L., a potential selenium phytoremediation plant

Author:
R.W. Feng; C.Y. Wei
Source:
Plant, Soil and Environment v.58 no.3 pp. 105-110
ISSN:
1214-1178
Subject:
Pteris vittata; antioxidants; arsenic; ascorbate peroxidase; biomass; catalase; environment; enzyme activity; glutathione; glutathione-disulfide reductase; hyperaccumulators; malondialdehyde; peroxidase; phytoremediation; selenites; selenium; soil; superoxide dismutase; toxicity
Abstract:
... Selenium (Se) contamination due to industrial activities has received increasing concerns. Phytoremediation has been suggested to be an efficient and feasible way to remove Se from Se-contaminated environment. Recently, an arsenic (As) hyperaccumulator Pteris vittata L. (Chinese Brake fern) was found to be a Se accumulator. This study was carried out to investigate Se accumulation mechanisms conce ...
DOI:
10.17221/162/2011-pse

2. 'Alperujo' compost amendment of contaminated calcareous and acidic soils: Effects on growth and trace element uptake by five Brassica species

Author:
Fornes, Fernando; García-de-la-Fuente, Rosana; Belda, Rosa M.; Abad, Manuel
Source:
Bioresource technology 2009 v.100 no.17 pp. 3982-3990
ISSN:
0960-8524
Subject:
lead; heavy metals; soil amendments; Brassica napus; calcareous soils; polluted soils; soil chemical properties; bioavailability; Brassica juncea; phytoremediation; Brassica carinata; plant growth; soil bacteria; arsenic; Brassica oleracea; microbial activity; zinc; acid soils; phytotoxicity; physicochemical properties; aluminum; composting
Abstract:
... The effects of 'alperujo' compost on trace element availability and on microbial activity of two contaminated soils, a calcareous soil (S1) with high contents of Pb and Zn, and an acidic soil (S2) with a substantial amount of Al, As, Pb and Zn, were assessed. Additionally, the growth and capacity for contaminant phytoextraction of five Brassica species were studied. Compost amendment did not affec ...
DOI:
10.1016/j.biortech.2009.03.050
PubMed:
19369067

3. (-)-Epigallocatechin-3-gallate (EGCG) attenuates arsenic-induced cardiotoxicity in rats

Author:
Tao-Li Sun; Zhi Liu; Zheng-Jun Qi; Yong-Pan Huang; Xiao-Qin Gao; Yan-Yan Zhang
Source:
Food and chemical toxicology 2016 v.93 pp. 102-110
ISSN:
0278-6915
Subject:
antioxidant activity; apoptosis; arsenic; calcium; drinking water; green tea; in vivo studies; medicinal properties; myocardium; oxidative stress; polyphenols; rats; toxicology; ultrastructure
Abstract:
... Chronic arsenic exposure in drinking water is associated with the abnormalities of cardiac tissue. Excessive generation of ROS induced by arsenic has a central role in arsenic-induced cardiotoxicity. (-)-Epigallocatechin-3-gallate (EGCG), the most abundant polyphenol in green tea, possesses a potent antioxidant capacity and exhibits extensive pharmacological activities. This study was aim to evalu ...
DOI:
10.1016/j.fct.2016.05.004

4. (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

5. (CF3)nE-Verbindungen (E = P, As) von Elementen der IV. Hauptgruppe / (CF3)nE Compounds (E = P, As) of Main Group IV Elements

Author:
Salman Ansari; Joseph Grobe
Source:
Zeitschrift für Naturforschung B 2014 v.30 no.7-8 pp. 523-530
ISSN:
1865-7117
Subject:
arsenic; chemical bonding; fluorine; germanium; hydrobromic acid; phosphine; polar compounds; polymers; silicon; tin
Abstract:
... Transphosphination reactions of (Me₃M)₃P and Me₃MPH₂ compounds (M = Si, Ge, Sn; Me = CH₃) using HE(CF₃)₂ or H₂ECF₃ (E = P, As) yield derivatives of the types Me₃ME(CF₃)₂, Me₃ME(H)CF₃, and (Me₃M)₂ECF₃, respectively. The reactivity of the different systems depends on M (Si < Ge < Sn), E (P < As), and the phosphine [Me₃MPH₂ < (Me₃M)₂PH < (Me₃M)₃P]. Me₃ME(H)CF₃ compounds undergo dismutation forming (M ...
DOI:
10.1515/znb-1975-7-811

6. (Cyclopentadienyl)dihalogenochromium-Donor Compounds. Synthesis and NMR Investigation

Author:
Brigitte Bräunlein; Frank H. Köhler; Werner Strauß; Harald Zeh
Source:
Zeitschrift für Naturforschung B 2014 v.50 no.11 pp. 1739-1747
ISSN:
1865-7117
Subject:
acetonitrile; antimony; arsenic; bromine; chromium; dimethyl sulfoxide; ethers; fluorine; iodine; ketones; ligands; nuclear magnetic resonance spectroscopy; protons; pyridines; stable isotopes
Abstract:
... A series of paramagnetic (S = 3/2) chromium half-sandwiches of the type CpCrX₂D (D = donor) were synthesized by starting from [CpCrX₂]₂, Cp₂Cr, CpCrCl₂(THF), and Cp*Cr(CH₃)₂[P(CH₃)₃]. Besides the parent cyclopentadienyl (Cp) the alkylated derivatives CH₃C₅H₄, (CH₃)₅C₅ (Cp*), and C₂H₅(CH₃)₄C₅ were bound to chromium. The electronegative substituent was X = F, Cl, Br, I, and triflate, while the donor ...
DOI:
10.1515/znb-1995-1122

7. (Im)mobilization of arsenic, chromium, and nickel in soils via biochar: A meta-analysis

Author:
Zahra Arabi; Jörg Rinklebe; Ali El-Naggar; Deyi Hou; Ajit K. Sarmah; Eduardo Moreno-Jiménez
Source:
Environmental pollution 2021 v.286 pp. 117199
ISSN:
0269-7491
Subject:
arsenic; biochar; chromium; feedstocks; meta-analysis; nickel; organic matter; pollution; pyrolysis; surface area; temperature
Abstract:
... Biochar is a promising immobilizing agent of trace elements (TEs) in contaminated soils. However, several contradictory results have been reported regarding the potential of biochar to immobilize arsenic (As), chromium (Cr), and nickel (Ni) in contaminated soils. We conducted a meta-analysis on the published papers since 2006 until 2019 to examine the effects of biochar on the chemical (im)mobiliz ...
DOI:
10.1016/j.envpol.2021.117199

8. (Methyl)Mercury, Arsenic, and Lead Contamination of the World’s Largest Wastewater Irrigation System: the Mezquital Valley (Hidalgo State—Mexico)

Author:
Stéphane Guédron; Céline Duwig; Blanca Lucia Prado; David Point; Marizol Giovana Flores; Christina Siebe
Source:
Water, air, and soil pollution 2014 v.225 no.8 pp. 2045
ISSN:
0049-6979
Subject:
adsorption; agricultural soils; arsenic; chromium; drinking water; groundwater; iron; irrigated soils; lead; manganese; mercury; methylmercury compounds; monitoring; oxidation; pH; people; risk; rivers; soil profiles; surface water; wastewater; wastewater irrigation; water supply; Mexico
Abstract:
... In the Mezquital valley, untreated wastewater (45 m³ s⁻¹) from Mexico City is used for the irrigation of around 900 km²of agricultural soil. High concentrations of metals including methylmercury (3.8 ± 2.5 ng l⁻¹) and lead (0.16 ± 0.05 mg l⁻¹) were measured in anoxic wastewater canals. Downstream, dissolved, and particulate polymetallic (Hg, Pb, Cr…) concentrations decreased by factors 10 to 1,000 ...
DOI:
10.1007/s11270-014-2045-3

9. (Micro)spectroscopic Analyses of Particle Size Dependence on Arsenic Distribution and Speciation in Mine Wastes

Author:
Kim C. S.; Chi C.; Miller S. R.; Rosales R. A.; Sugihara E. S.; Akau J.; Rytuba J. J.; Webb S. M.
Source:
Environmental Science & Technology 2013 v.47 no.15 pp. 8164-8171
ISSN:
1520-5851
Subject:
arsenic; bioavailability; chemical analysis; chemical speciation; ferrihydrite; fluorescence; goethite; iron; iron hydroxides; mine tailings; mining; particle size; prediction; sorption; spectral analysis; spectroscopy; toxicity; weathering; California
Abstract:
... The chemical speciation and distribution of potentially toxic metal(loid)s in mine wastes is critical to assessing the risks posed by these wastes and predicting the potential bioavailability of the metal(loid)s present. Of additional potential importance is the role of particle size in the fate, transport, and toxicity of contaminated mining materials. Spectroscopic analyses of size-separated min ...
DOI:
10.1021/es4010653

10. 1,2,3-Triphosphole derivatives as reactive intermediates

Author:
Markus Stubenhofer; Christian Kuntz; Gábor Balázs; Manfred Zabel; Manfred Scheer
Source:
Chemical communications 2009 v. no.13 pp. 1745-1747
ISSN:
1364-548X
Subject:
arsenic; chemical communication; chemical compounds; chemical reactions; materials; phosphorus
Abstract:
... The complexes [Cp*E{W(CO)₅}₂] (E = P, As; Cp* = C₅Me₅) react with 1,2-diphosphinobenzene to give 1,2,3-triphosphole and 2-arsa-1,3-diphosphole derivatives as reactive intermediates that dimerise to polycyclic phosphorous and arsenic containing cage compounds. ...
DOI:
10.1039/b822732b

11. 12years of leaching of contaminants from Pb smelter slags: Geochemical/mineralogical controls and slag recycling potential

Author:
Vojtěch Ettler; Zdenek Johan
Source:
Applied geochemistry 2014 v.40 pp. 97-103
ISSN:
0883-2927
Subject:
European Union; anglesite; antimony; arsenic; barite; barium; barium sulfate; batteries; cerussite; civil engineering; copper; ferric oxide; geochemistry; hazardous waste; laws and regulations; leaching; lead; recycling; slags; sorption; zinc
Abstract:
... Lead slags from two different metallurgical technologies (primary slag from Pb-ore processing and secondary slag from car battery recycling) were submitted to 12-year batch leaching at a L/S ratio of 10 and the leaching data were compared with the previously obtained results from a ⩽1-year leaching test. In the long-term, the Pb release is efficiently controlled by the precipitation of cerussite ( ...
DOI:
10.1016/j.apgeochem.2013.11.001

12. 14-Month Water Quality Investigation of Coal Mine Discharge on Two Rivers in NSW, Australia: Implications for Environmental Regulation

Author:
Callum Fleming; Katherine Morrison; Leo Robba; Jason Reynolds; Ian A. Wright
Source:
Water, air, and soil pollution 2021 v.232 no.3 pp. 90
ISSN:
0049-6979
Subject:
air; aluminum; arsenic; coal; environmental law; governance; hydrochemistry; nickel; pH; rivers; soil pollution; total nitrogen; water; water pollution; water quality; zinc
Abstract:
... Ineffective environmental regulation of effluent discharged from an underground coal mine operation has enabled water pollution within two highly valued Australian rivers. This study investigated the impacts on water chemistry of the Bargo and Nepean rivers as a result of the continuous disposal of mine effluent from Tahmoor Colliery over a 14-month period. Coal mine effluent was saline (2180 μS/c ...
DOI:
10.1007/s11270-021-05020-7

13. 16S rRNA and As-Related Functional Diversity: Contrasting Fingerprints in Arsenic-Rich Sediments from an Acid Mine Drainage

Author:
Anne Fahy; Ludovic Giloteaux; Philippe Bertin; Denis Le Paslier; Claudine Médigue; Jean Weissenbach; Robert Duran; Béatrice Lauga
Source:
Microbial ecology 2015 v.70 no.1 pp. 154-167
ISSN:
0095-3628
Subject:
Acidithiobacillus; Acidobacteria; Actinobacteria; Thiomonas; acid mine drainage; amino acid sequences; arsenic; arsenites; bacteria; evolution; functional diversity; genes; oxidation; ribosomal RNA; sediments; transporters; France
Abstract:
... To gain an in-depth insight into the diversity and the distribution of genes under the particular evolutionary pressure of an arsenic-rich acid mine drainage (AMD), the genes involved in bacterial arsenic detoxification (arsB, ACR3) and arsenite oxidation (aioA) were investigated in sediment from Carnoulès (France), in parallel to the diversity and global distribution of the metabolically active b ...
DOI:
10.1007/s00248-014-0558-3

14. 1997 UK Total Diet Study--dietary exposures to aluminium, arsenic, cadmium, chromium, copper, lead, mercury, nickel, selenium, tin and zinc

Author:
Ysart, G.; Miller, P.; Croasdale, M.; Crews, H.; Robb, P.; Baxter, M.; De L'Argy, C.; Harrison, N.
Source:
Food additives & contaminants 2000 v.17 no.9 pp. 775-786
ISSN:
0265-203X
Subject:
estimation; chemical composition; foods; mercury; zinc; lead; arsenic; food contamination; selenium; cadmium; tin; aluminum; nickel; food composition; chromium; dietary surveys; environmental exposure; United Kingdom
Abstract:
... Concentrations of aluminium, arsenic, cadmium, chromium, copper, lead, mercury, nickel, selenium, tin and zinc were determined in samples from the 1997 UK Total Diet Study and used to estimate dietary exposures of the general UK population. Population average dietary exposures to aluminium (3.4 mg/day), arsenic (0.065 mg/day), cadmium (0.012 mg/day), chromium (0.10 mg/day), copper (1.2 mg/day), me ...
DOI:
10.1080/026520300415327
PubMed:
11091791

15. 1H-NMR-spektroskopische Analyse von 2-Diphenylamino- [1.3.2] oxathiaarsolan/ 1H NMR Spectroscopic Analysis of 2-Diphenylamino-[1,3,2]oxathiaarsolane

Author:
Oswald Adler; Friedhelm Kober
Source:
Zeitschrift für Naturforschung 2014 v.31 no.4 pp. 472-474
ISSN:
0932-0776
Subject:
arsenic; nuclear magnetic resonance spectroscopy; protons; spectral analysis
Abstract:
... ¹H NMR spectral data of 2-diphenylamino-[1,3,2]oxathiaarsolane are presented and discussed. The protons of the CH₂-groups form an AKPX-spin system. The vicinal H-C-C-H coupling constants indicate a twist-envelope conformation. A rapid inversion at arsenic does not take place. ...
DOI:
10.1515/znb-1976-0414

16. 200-year industrial archaeological record preserved in an Isle of Man saltmarsh sediment sequence: Geochemical and radiochronological evidence

Author:
Ian W. Croudace; Phillip A. Teasdale; Andrew B. Cundy
Source:
Quaternary international 2019 v.514 pp. 195-203
ISSN:
1040-6182
Subject:
arsenic; cesium; coastal sediments; coasts; copper; highlands; hydrology; lead; mining; models; plutonium; radionuclides; salt marshes; upland soils; watersheds; zinc; Irish Sea; Isle of Man
Abstract:
... The Isle of Man, situated in the central Irish Sea, was a significant centre for Pb and Zn mineral extraction during the Industrial Revolution. Comminuted mining debris from the East Snaefell and North Laxey mining areas was transported, through hydrological action, from upland catchments to the coast. This study focuses on an eastern coastal sediment sink and a salt marsh sediment sequence from P ...
DOI:
10.1016/j.quaint.2018.09.045

17. 2009–2017 trends of PM10 in the legendary Riotinto mining district of SW Spain

Author:
Ana M. Sánchez de la Campa; Daniel Sánchez-Rodas; Gonzalo Márquez; Emilio Romero; Jesús D. de la Rosa
Source:
Atmospheric research 2020 v.238 pp. 104878
ISSN:
0169-8095
Subject:
air quality; antimony; arsenic; bismuth; carbon; combustion; copper; emissions; filters; human health; lead; mining; models; particulates; pyrite; toxicity; traffic; water solubility; zinc; Spain
Abstract:
... This study is the first to perform a chemical characterization and source contribution of particulate matter (PM₁₀) occurring through the abandonment and reopening of a historical sulphide mine. This long-range analysis covers the period 2009–2017 in the Riotinto mining district (Iberian Pyrite Belt, Southwestern Spain), which is a mining district of world-class importance. This mine represents a ...
DOI:
10.1016/j.atmosres.2020.104878

18. 2013 Southeast Asian Smoke Haze: Fractionation of Particulate-Bound Elements and Associated Health Risk

Author:
Betha Raghu; Behera Sailesh N.; Balasubramanian Rajasekhar
Source:
Environmental Science & Technology 2014 v.48 no.8 pp. 4327-4335
ISSN:
1520-5851
Subject:
aerosols; air; air pollution; aluminum; arsenic; biomass; burning; cadmium; calcium; chromium; cobalt; copper; fractionation; humans; iron; lead; magnesium; manganese; models; nickel; potassium; respiratory system; risk; risk estimate; selenium; smoke; toxicity; zinc; South East Asia
Abstract:
... Recurring biomass burning-induced smoke haze is a serious regional air pollution problem in Southeast Asia (SEA). The June 2013 haze episode was one of the worst air pollution events in SEA. Size segregated particulate samples (2.5–1.0 μm; 1.0–0.5 μm; 0.5– 0.2 μm; and <0.2 μm) were collected during the June 2013 haze episode. PM₂.₅ concentrations were elevated (up to 329 μg/m³) during the haze epi ...
DOI:
10.1021/es405533d

19. 24-Epibrassinolide promotes arsenic tolerance in Arabidopsis thaliana L. by altering stress responses at biochemical and molecular level

Author:
Yonca Surgun-Acar; Fahriye Zemheri-Navruz
Source:
Journal of plant physiology 2019 v.238 pp. 12-19
ISSN:
0176-1617
Subject:
Arabidopsis thaliana; antioxidant activity; antioxidants; arsenates; arsenic; biosynthesis; catalase; enzyme activity; gene expression regulation; genes; heat shock proteins; leaves; malondialdehyde; messenger RNA; proline; stress response; superoxide dismutase; transcription (genetics)
Abstract:
... In this study, the effect of 24-Epibrassinolide (EBL) on antioxidant system in Arabidopsis thaliana were investigated under arsenate [As(V)] stress. The enzyme activity of superoxide dismutase (SOD) and catalase (CAT), total antioxidant status, malondialdehyde (MDA) level and free proline content, as well as the expression levels of SOD isoforms (Cu-ZnSODs, FeSODs and MnSOD), CAT isoforms (CAT1, C ...
DOI:
10.1016/j.jplph.2019.05.002

20. 2D-Pnictogens: alloy-based anode battery materials with ultrahigh cycling stability

Author:
Seyyed Mohsen Beladi-Mousavi; Martin Pumera
Source:
Chemical Society reviews 2018 v.47 no.18 pp. 6964-6989
ISSN:
1460-4744
Subject:
anisotropy; anodes; antimony; arsenic; bismuth; crystal structure; electric vehicles; energy density; graphene; lithium; lithium batteries; phosphorus; physical properties; reaction mechanisms; sodium
Abstract:
... There is an increasing demand for efficient energy storage systems in our modern mobile society for a wide range of applications such as smart grids, portable electronic devices, and electric vehicles. The performance of advanced batteries in terms of energy density, power density, cyclability, and safety is mainly determined by the primary functional components, particularly by the electrode mate ...
DOI:
10.1039/c8cs00425k