The ecology of arsenic

被引：1244
作者：
Oremland, RS
Stolz, JF
机构：
[1] US Geol Survey, Menlo Pk, CA 94025 USA
[2] Duquesne Univ, Dept Biol Sci, Pittsburgh, PA 15282 USA
来源：
SCIENCE | 2003年 / 300卷 / 5621期
关键词：
D O I：
10.1126/science.1081903
中图分类号：
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号：
07 ; 0710 ; 09 ;
摘要：
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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页码：939 / 944
页数：6
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