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Journal ArticleDOI

The Ecology of Arsenic

Ronald S. Oremland, +1 more
- 09 May 2003 - 
- Vol. 300, Iss: 5621, pp 939-944
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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.

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Citations
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Arsenic, antimony, and nickel leaching from northern peatlands treating mining influenced water in cold climate.

TL;DR: The results showed that contaminant accumulation in treatment peatlands after long-term use can lead to decreased removal and escalated leaching of contaminants, with the effect being more pronounced for As and Ni.
Journal ArticleDOI

Effect of arsenic on tolerance mechanisms of two plant growth-promoting bacteria used as biological inoculants

TL;DR: The behavior of Azospirillum under As treatments suggests that this strain would be able to colonize efficiently As contaminated soils, and inoculation with A. brasilense Az39 would positively contribute to promoting growth of different plant species under As treatment.
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Arsenite oxidation by a facultative chemolithotrophic Delftia spp. BAs29 for its potential application in groundwater arsenic bioremediation

TL;DR: In this article, a gram-negative rod-shaped strain of Delftia spp. was characterized thoroughly for its As (III) oxidation ability, releasing-67 kJ/reaction of free energy in an exergonic reaction.
Journal ArticleDOI

Arsenic species in Australian temperate marine food chains

TL;DR: An overview of bioconversions of arsenic species that occur in marine food chains based on studies conducted by the laboratory as well as the work of others is presented.
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.
Journal ArticleDOI

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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