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Ecotoxicological effects of mixed pollutants resulted from e-wastes recycling and bioaccumulation of polybrominated diphenyl ethers in Chinese loach(Misgurnus anguillicaudatus)

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Journal of Environmental Sciences 2009年第12期21卷 1695-1701页

作者： QIN Xiaofei XIA Xijuan LI Yan ZHAO Yaxian YANG Zhongzhi FU Shan TI-AN Mi ZHAO Xingru QIN Zhanfen XU Xiaobai YANG Yongjian State Key Laboratory of Environmental Chemistry and Ecotoxicology Research Center for Eco-environmental Sciences Chinese Academy of Sciences Beijing 100085 China Taizhou No.1 Middle School Taizhou 318000 China

To understand potential ecotoxicological effects of electrical and electronic equipment waste （e-waste） recycling and polybrominated diphenyl ethers （PBDEs） bioaccumulation in loaches, a semi-field experiment using Chinese loach （Misgurnus anguiUicaudatus） as experimental fish was performed. Larval loaches were kept in net-cage for three months in an e-wastes recycling site and a reference site in Southeastern China. There was significant difference of the survival rate between the loaches from the e-wastes recycling site （27%, 19/70） and from reference site （70%, 49/70）. Histopathological responses were also found in all the livers examined in loaches from the e-wastes recycling site. These results showed that mixed pollutants resulted from e-wastes recycling led to ecotoxicological effects on loaches. The bioaccumulation of polybrominated diphenyl ethers （PBDEs）, the main pollutants in e-waste, in loaches was also studied, the mean concentration of total PBDEs in sediment was 6726.17 ng/g wet weight and in water samples was 4.08 ng/L （dissolved phase）. BDE 209 was the dominant congener in sediment and with relatively high concentration in water. Relatively low concentration of BDE 209 （less than 0.01% of total PBDEs） and high concentration of BDE47 （up to 39.34% of total PBDEs） were detected in loaches.

关键词： e-wastes loach ecotoxicological effects polybrominated diphenyl ethers semi-field experiment

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Responses of Filtration Rate of Freshwater Mussel Anodonta woodiana to Ambient Ammonia Concentration

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Agricultural Science & Technology 2010年第2期11卷 179-182页

作者：葛长字秦耿彭小经中国水产科学研究院内陆渔业生态环境和资源重点开放实验室江苏无锡214081 山东大学威海分校海洋学院山东威海264209 中国海洋大学海洋渔业系山东青岛266003

By using one static water system,the filtration rates of one kind of freshwater mussel Anodonta woodiana with different body weight(accounted by dry weight of soft tissue)were studied under semi-field *** the experiments,the water temperature and the suspended particulate matters concentration were kept relative invariable and there were four ambient ammonia concentration *** ambient water ammonia concentration was obtained by the excretion of the freshwater mussel and the accession of ...

关键词： semi-field experiment Ammonia concentration Dry weight of soft tissue Anodonta woodiana Filtration rate

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