CONFUSION BETWEEN DIMETHYL SELENENYL SULFIDE AND DIMETHYL SELENONE RELEASED BY BACTERIA

被引:59
作者
CHASTEEN, TG
机构
[1] Department of Chemistry, Sam Houston State University, Huntsville, Texas
关键词
BIOREMEDIATION; BIODEGRADATION; DIMETHYL SELENENYL SULFIDE; BIOMETHYLATION; PATHWAY; CHEMILUMINESCENCE; MICROORGANISM;
D O I
10.1002/aoc.590070507
中图分类号
O69 [应用化学];
学科分类号
081704 ;
摘要
Dimethyl selenone [(CH3)2SeO2] has been reported in the literature as a metabolite released by bacteria in contact with selenium metal or selenium salts. In this study, mass spectral, chromatographic, and boiling-point data are presented that show that dimethyl selenone has been confused with dimethyl selenenyl sulfide (CH3SeSCH3). In addition, the headspaces above monocultures of selenium-resistant bacteria were examined using gas chromatography followed by fluorine-induced chemiluminescence detection. A number of alkyl sulfur and selenium species were detected, along with dimethyl selenenyl sulfide. A pathway from oxidized selenium salts to reduced methylated selenides and dimethyl selenenyl sulfide is also presented.
引用
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页码:335 / 342
页数:8
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