砷化合物对产甲烷作用的抑制
Methanogenic inhibition by arsenic compounds.
作者信息
Sierra-Alvarez Reyes, Cortinas Irail, Yenal Umur, Field Jim A
机构信息
Department of Chemical and Environmental Engineering, University of Arizona, P.O. Box 210011, Tucson, AZ 85721-0011, USA.
出版信息
Appl Environ Microbiol. 2004 Sep;70(9):5688-91. doi: 10.1128/AEM.70.9.5688-5691.2004.
Abstract
The acute acetoclastic methanogenic inhibition of several inorganic and organic arsenicals was assayed. Trivalent species, i.e., methylarsonous acid and arsenite, were highly inhibitory, with 50% inhibitory concentrations of 9.1 and 15.0 microM, respectively, whereas pentavalent species were generally nontoxic. The nitrophenylarsonate derivate, roxarsone, displayed moderate toxicity.
摘要
对几种无机和有机砷化合物的急性产乙酸甲烷生成抑制作用进行了测定。三价化合物，即甲基胂酸和亚砷酸盐，具有高度抑制性，其50%抑制浓度分别为9.1和15.0微摩尔，而五价化合物通常无毒。硝基苯胂酸衍生物洛克沙胂表现出中等毒性。
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