2013 Fiscal Year Final Research Report
A study on behavior and source of PFOS, PFOA and their precursors in the aquatic environment
| Project/Area Number |
23510020
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Environmental dynamic analysis
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| Research Institution | Center for Environmental Science in Saitama |
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Principal Investigator |
MOTEGI Mamoru 埼玉県環境科学国際センター, 化学物質担当, 主任研究員 (10415391)
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| Co-Investigator(Kenkyū-buntansha) |
NOJIRI Kiyoshi 埼玉県環境科学国際センター, 化学物質担当, 担当部長 (70415389)
HORII Yuichi 埼玉県環境科学国際センター, 化学物質担当, 主任 (30509534)
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| Project Period (FY) |
2011 – 2013
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| Keywords | 有機フッ素化合物 / PFOS / PFOA / 前駆物質 / 生活排水 / 製品 / 生分解 |
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| Research Abstract |
Concentrations of PFOS and PFOA showed decreasing and increasing tendencies in river waters from Saitama Prefecture, respectively. A lot of commercial products contained a precursor of PFOA. Concentrations of PFOS and PFOA detected in effluents from sewage treatment plants (STPs) were generally higher than those of the geometric mean in the river waters. Semi-volatile precursors of PFOA were detected in aeration gas from a reaction tank of STPs. An aerobic river water/sediment system by the shake-flask batch test showed the bio-transformations from the precursors to PFOS or PFOA. The results suggested that the contamination of PFOS and PFOA in rivers from Saitama Prefecture was caused by direct discharge from STPs and bio-transformation from precursors of PFOS and PFOA in the river environment.
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Research Products
(17 results)
