| UPTAKE AND TRANSFER OF 14C SIMETRYNE THROUGH THE LABORATORY FRESHWATER FOOD CHAIN |
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| 作者姓名： | 徐盈 J.P.Lay 张甬元 |
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| 作者单位： | Institute of Hydrobiology，Academia Sinica，Wuhan，Institute of Hydrobiology，Academia Sinica，Wuhan，Institute of Hydrobiology，Academia Sinica，Wuhan |
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| 基金项目： | This project is a part of a cooperation program between the Institute of Hydrobiology, Academia Sinica, Wuhan, and the Institut fur Okologische Chemie, GSF, F. R. Germany, and is supported by the Natural Science Foundation of Academia Sinica. |
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| 摘 要： | This paper deals with the bioconcentration of 14C-simetryne from water by aquatic test organisms : green algae-Monoraphidium minutum, rotifers-Brachionus rubens, daphnids-Daphnia magna, and fish-Brachydanio rerio . The chemical was bioconcentrated rapidly in all test species during the first 48 hours of experiment. The BCF values (bioconcentration factor) from all uptake studies show that simetryne has higher accumulation in algae than in rotifers, daphnids and zebra fish.The logarithm of the n-octanol/water partition coefficient of simetryne measured as 2.06+0.05 was correlated with the BCFs in the organisms as based on the lipid contents.14C-simetryne uptake via the food-chain amounted to only 22% to 42% of the bioconcentration from water. Clearance of 14 C- derived residues from fish was rapid with a half-life of 2.1 days.
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