| ENVIRONMENTAL BEHAVIOR OF LINEAR ALKYLBENZENE SULFONATE (LAS) IN AQUATIC ECOSYSTEM |
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| 作者姓名： | 张甬元 谭渝云 F.Korte |
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| 作者单位： | Institute of Hydrobiology，Academia Sinica，Wuhan 430072，Institute of Hydrobiology，Academia Sinica，Wuhan 430072，Gesellschaft fur Strahlen-und Umweltforschung mbH Munchen Institut fur Ukokogische Chemie，F.R. Germany |
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| 基金项目： | This cooperation project between the Institute of Hydrobiology,Acadcmia Sinica,Wuhan,P.R. China and Institut fur Okologische Chemic der Gesellschafi fur Strahlen und Umweltforschung,F.R.Germany.was supported by the Natural Science Foundation P.R.China an |
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| 摘 要： | LAS degradation rate in Donghu Lake water under aerobic was much faster than under anaerobic condition . The half life of LAS in aerobic and anaerobic environment was 3.2 days and 57 days, respectively . The degradation rate at 25-27℃was approximately 20 times higher than that at 1.5-3.5℃.In a laboratory model aquatic ecosystem, two stages of bioconcentration in fish , daphnia and snail were observed . The first stage , on second day exposure , resulted from accumulation of intact LAS , and the second stage , on 16th day exposure , was due to metabolites . The bioconcentration factor (BCF) of LAS was extremely low in the muscle of hybrid carp (0.64), but rather high (2485) in the gall bladder .
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