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Newman, Dianne K. (2000) Arsenic. In: Encyclopedia of Microbiology, 2nd edition. Vol.1. Academic Press , San Diego, CA, pp. 332-338. ISBN 9780122268007.

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Arsenic is relatively abundant in the biosphere owing to contamination from a variety of anthropogenic sources in addition to its natural occurrence in minerals. Since the industrial revolution, arsenic has been discharged into waterways as a waste product of sulfuric acid manufacturing, sprayed onto soils as a pesticide, dispersed into the air during ore smelting, and distributed over the Earth through mining activities. Although human activities are estimated to release 50,000 tons of arsenic per year, simple weathering of igneous and sedimentary rocks (including coal) naturally releases nearly an equal amount of arsenic into the environment. The geochemical cycle of arsenic is controlled by a variety of chemical reactions, including oxidation-reduction, precipitation-dissolution, adsorption-desorption, and methylation. Strong evidence exists that microorganisms play an important role in these reactions. This article will focus primarily on the microbial contributions to the cycling of inorganic arsenic.

Item Type:Book Section
Newman, Dianne K.0000-0003-1647-1918
Additional Information:© 2000 Academic Press.
Record Number:CaltechAUTHORS:20130722-145408915
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:39503
Deposited By: Tony Diaz
Deposited On:22 Jul 2013 22:28
Last Modified:03 Oct 2019 05:07

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