| Project/Area Number |
26340088
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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 risk control and evaluation
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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, 担当部長 (10415391)
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| Co-Investigator(Kenkyū-buntansha) |
野尻 喜好 埼玉県環境科学国際センター, 大気環境担当, 主任専門員 (70415389)
堀井 勇一 埼玉県環境科学国際センター, 化学物質担当, 専門研究員 (30509534)
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| Project Period (FY) |
2014-04-01 – 2017-03-31
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| Project Status |
Completed (Fiscal Year 2016)
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| Budget Amount *help |
¥4,940,000 (Direct Cost: ¥3,800,000、Indirect Cost: ¥1,140,000)
Fiscal Year 2016: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2015: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2014: ¥2,600,000 (Direct Cost: ¥2,000,000、Indirect Cost: ¥600,000)
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| Keywords | 有機フッ素化合物 / PFOS / PFOA / 前駆物質 / 生分解 / 河川水 / 底質 / PFDA / 製品 |
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| Outline of Final Research Achievements |
Concentrations of both perfluorooctane sulfonic acid (PFOS) and perfluorooctanoic acid (PFOA) showed decreasing tendencies in river waters in Saitama Prefecture. Fluorotelomer alcohols (8:2FTOH and 10:2FTOH) in a commercial product mainly biotransformed to PFOA and perfluorodecanoic acid (PFDA) in an aerobic water/sediment system by a shake flask batch test. The biotransformation rate from 10:2FTOH to PFDA was slower than that from 8:2FTOH to PFOA. After 336 days of aerobic water/sediment incubation, 73% of PFOS and 3% of PFOA were produced by biotransformation of N-Ethyl perfluorooctane sulfonamidoethanol (N-EtFOSE). The results suggest that these precursors can be considerable pollution sources of PFOS and PFOA in the aquatic environment.
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