Journal ArticleDOI
The Ecology of Arsenic
Ronald S. Oremland,John F. Stolz +1 more
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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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Journal ArticleDOI
Occurrence, distribution and source of arsenic in deep groundwater wells in Maydavood area, southwestern Iran
TL;DR: In this article, a detailed analysis of groundwater in some deep wells of Maydavood aquifer, southwestern Iran, showed that concentrations of iron, manganese, nickel, and vanadium are high in them and concentrations of total arsenic in 81% of deep wells are greater than World Health Organization's permissible value (10 ppb).
Effect of Arsenic on the Denitrification Process in the Presence of Naturally-Produced Volatile Fatty Acids and Arsenic Removal by New Zealand Iron Sand (NZIS)
TL;DR: In this paper, the authors propose a method to solve the problem of homonymity in homonym identification, i.e., homonymization, in the context of homology.
Book ChapterDOI
Water, arsenic, and climate change
TL;DR: Arsenic is one of the most toxic and eco-rich elements found in the geosphere and it is also well known for its carcinogenicity and genotoxicity.
Journal ArticleDOI
Response to arsenate treatment in Schizosaccharomyces pombe and the role of its arsenate reductase activity.
Alejandro Salgado,Ana López-Serrano Oliver,Ana M. Matia-González,Jael Sotelo,S. Zarco-Fernández,Riansares Muñoz-Olivas,Carmen Cámara,Miguel Ángel Rodríguez-Gabriel +7 more
TL;DR: It is proposed that arsenate reduction and intracellular accumulation of arsenite are the key mechanisms of arsenate tolerance in fission yeast.
References
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Journal ArticleDOI
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.
Journal ArticleDOI
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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