| Project/Area Number |
25340088
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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 |
Modeling and technologies for environmental conservation and remediation
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| Research Institution | National Institute for Environmental Studies |
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Principal Investigator |
Sakurai Takeo 国立研究開発法人国立環境研究所, 環境リスク研究センター, 主任研究員 (90311323)
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| Co-Investigator(Kenkyū-buntansha) |
KOBAYASHI Jun 熊本県立大学, 環境共生学部, 准教授 (00414368)
YABE Tohru 国立研究開発法人国立環境研究所, 生物・生態系環境研究センター, 主任研究員 (50300851)
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| Project Period (FY) |
2013-04-01 – 2016-03-31
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| Project Status |
Completed (Fiscal Year 2015)
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| Budget Amount *help |
¥4,940,000 (Direct Cost: ¥3,800,000、Indirect Cost: ¥1,140,000)
Fiscal Year 2015: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2014: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
Fiscal Year 2013: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
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| Keywords | 汚染質動態とモデリング / 残留性 / 生物蓄積 / 底生動物 / 動力学 / 吸収 |
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| Outline of Final Research Achievements |
We conducted a study to elucidate the transfer kinetics of perfluorooctanesulfonate (PFOS) to a marine sandworm species via the gut. We established an individual-expousre system, chemical analytical method of PFOS in sandworm and food pellet samples, and the method to spike PFOS to food pellets. We then conducted a trnsfer experiment and kinetically anlyzed the results. We estimated the gut absoprtion efficiency at about 100% and the depuration halflife at 91 days. The depuration was statistically insignificant. The depuration halflife was longer than the results of earlier studies using other aquatic organisms and of a previous experiment of the respiratory uptake of this species. Thus, further investigations, also regarding other perfluoro/polyfluoro-alkyl acid compounds, on the underlying mechanisms of this difference is needed.
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