Journal ArticleDOI
The Ecology of Arsenic
Ronald S. Oremland,John F. Stolz +1 more
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TLDR
This work reviews what is known about arsenic-metabolizing bacteria and their potential impact on speciation and mobilization of arsenic in nature and investigates their role in aquifers.Abstract:
Arsenic is a metalloid whose name conjures up images of murder. Nonetheless, certain prokaryotes use arsenic oxyanions for energy generation, either by oxidizing arsenite or by respiring arsenate. These microbes are phylogenetically diverse and occur in a wide range of habitats. Arsenic cycling may take place in the absence of oxygen and can contribute to organic matter oxidation. In aquifers, these microbial reactions may mobilize arsenic from the solid to the aqueous phase, resulting in contaminated drinking water. Here we review what is known about arsenic-metabolizing bacteria and their potential impact on speciation and mobilization of arsenic in nature.read more
Citations
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Adsorption capacities of poorly crystalline Fe minerals for antimonate and arsenate removal from water: Adsorption properties and effects of environmental and chemical conditions
TL;DR: In this article, the adsorption capacity and rate of Sb(V) and arsenate (As(V)) from water with fresh ferrihydrite were compared by establishing the adaption isotherms and kinetics.
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Relative Expression of Low Molecular Weight Protein, Tyrosine Phosphatase (Wzb Gene) of Herbaspirillum sp. GW103 Toward Arsenic Stress and Molecular Modeling.
Muthusamy Govarthanan,Jung-Hee Park,Loganathan Praburaman,Young-Joo Yi,Min Cho,Hyun Myung,Shanmugam Gnanendra,Seralathan Kamala-Kannan,Byung-Taek Oh +8 more
TL;DR: The results showed up- and down-regulations of Wzb gene in the presence of As (50 and 100 mg/L) and the model was validated for its quality by Ramachandran plot, ERRAT, Verify 3D, and SAVES server which revealed structure and quality of the Wzb genes model.
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Sediment evidence of industrial leakage-induced asynchronous changes in polycyclic aromatic hydrocarbons and trace metals from a sub-trophic lake, southwest China.
TL;DR: The sediment records reveal that local fingerprints of smelting activities in the catchment of Yangzong Lake have overridden the temporary pattern of regional atmosphere-borne As and PAHs over the last decade, highlighting the important role of local pollution sources in modulating or even overriding the regional pattern of anthropogenic contamination in highly impacted systems.
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Arsenic causes mitochondrial biogenesis obstacles by inhibiting the AMPK/PGC-1α signaling pathway and also induces apoptosis and dysregulated mitophagy in the duck liver
Gaolong Zhong,Ting Hu,Lixuan Tang,Tong Li,Shao-pen Wu,Xuewu Duan,Ji-Min Pan,Hu Zhang,Zhaoxin Tang,Xianghua Feng,Lianmei Hu +10 more
TL;DR: Wang et al. as mentioned in this paper investigated the potential role of mitochondrial biogenesis, mitophagy and apoptosis in duck hepatotoxicity caused by arsenic and found that arsenic-exposure significantly inhibited AMPK/PGC-1α-mediated mtBis.
Immobilization of mercury and arsenic through covalent thiolate bonding for the purpose of environmental remediation
TL;DR: In this article, the authors propose a method of disassembling a set of disassembly points, called DISSERTATION, which is based on disassemblage-of-dispersal.
References
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A review of the source, behaviour and distribution of arsenic in natural waters
TL;DR: The scale of the problem in terms of population exposed to high As concentrations is greatest in the Bengal Basin with more than 40 million people drinking water containing ‘excessive’ As as mentioned in this paper.
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Worldwide Occurrences of Arsenic in Ground Water
TL;DR: Nordstrom et al. as mentioned in this paper argue that human health risks from arsenic in ground water can be minimized by incorporating hydrogeochemical knowledge into water management decisions and by more careful monitoring for arsenic in geologically high-risk areas.
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Arsenic poisoning of Bangladesh groundwater
TL;DR: Sedimentological study of the Ganges alluvial sediments shows that the arsenic derives from the reductive dissolution of arsenic-rich iron oxyhydroxides, which in turn are derived from weathering of base-metal sulphides.
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