Stable nitrogen isotope ratio-guided analysis of PCBs and PBDEs congener level biomagnification profiles
Project/Area Number |
19310024
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Research Category |
Grant-in-Aid for Scientific Research (B)
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Allocation Type | Single-year Grants |
Section | 一般 |
Research Field |
Environmental impact assessment/Environmental policy
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Research Institution | Ehime University |
Principal Investigator |
TAKEUCHI Ichiro Ehime University, 農学部, 教授 (30212020)
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Co-Investigator(Kenkyū-buntansha) |
KAWANO Masahide 愛媛大学, 農学部, 准教授 (50116927)
高田 秀重 東京農工大学, 大学院・共生科学技術研究院, 教授 (70187970)
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Co-Investigator(Renkei-kenkyūsha) |
TAKADA Hideshige 東京農工大学, 大学院・共生科学技術研究院, 教授 (70187970)
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Project Period (FY) |
2007 – 2009
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Project Status |
Completed (Fiscal Year 2009)
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Budget Amount *help |
¥18,850,000 (Direct Cost: ¥14,500,000、Indirect Cost: ¥4,350,000)
Fiscal Year 2009: ¥4,940,000 (Direct Cost: ¥3,800,000、Indirect Cost: ¥1,140,000)
Fiscal Year 2008: ¥6,500,000 (Direct Cost: ¥5,000,000、Indirect Cost: ¥1,500,000)
Fiscal Year 2007: ¥7,410,000 (Direct Cost: ¥5,700,000、Indirect Cost: ¥1,710,000)
|
Keywords | 生態系評価 / 浅海域生態系 / PCBs / PBDEs / 窒素安定同位体 / 生物濃縮特性 / 食物連鎖 / 炭素安定同位体 / 生物濃縮過程 / 沿岸域生態系 |
Research Abstract |
Biomagnification profiles of PCBs and PBDEs through shallow water ecosystems around Japan were analyzed by congener level using nitrogen stable isotope ratios as guides to trophic structure. About 130 to 155 PCB congeners were detected in half of the biological samples collected from shallow water ecosystems of western Japan. For these PCB congeners, degree of biomagnification on a wet weight basis exceeded that on a lipid weight basis. For each PCB congener level, the degree of biomagnification increased with increasing chlorination substitution up to about 6 chlorine numbers; the degree of biomagnifications did not increase thereafter at higher chlorination substitution numbers. The degree of PBDE congener biomagnification was lower than that of PCB congener with same degree of lipophilicity.
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Report
(4 results)
Research Products
(20 results)
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[Presentation] Biomagnification profiles of dioxin-like PCBs in the predator-prey relationship between sand lance and sea bass in the Seto Inland Sea, Japan2010
Author(s)
atsuo H, Shiki Y, Kawano M, Omori K, Matsuda M, Morita M, Takeuchi I.
Organizer
First International Conference on Environmental Pollution, Restoration, and Management, Ho Chi Minh City, Vietnam
Year and Date
2010-03-03
Related Report
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