2012 Fiscal Year Final Research Report
Studies on microbial effects and biotransformation of diphenylarsinic acid in anaerobic soils
| Project/Area Number |
22510083
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Environmental technology/Environmental materials
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| Research Institution | Niigata University |
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Principal Investigator |
HARADA Naoki 新潟大学, 自然科学系, 准教授 (50452066)
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| Project Period (FY) |
2010 – 2012
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| Keywords | 環境修復技術 |
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| Research Abstract |
The objectives of this study were to investigate, 1) effects of diphenylarsinic acid (DPAA) on microbial community structures and 2) factors affecting biotransformation of DPAA, in anaerobic soils. As a result, the presence of DPAA did not distinctly change soil bacterial and archaeal community structures under submerged and anaerobic conditions. The microbial transformation of DPAA in soil was enhanced under sulfate-reducing conditions and diphenylthioarsinic acid (DPTA) was found as a major metabolite. Participation of sulfate-reducing bacteria in the transformation of DPAA to DPTA is predicted.
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