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《Chinese Journal of Analytical Chemistry》 2005-10
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Studies on Analytical Method for Trace Polychlorinated Biphenyls Congeners in the Xenopus Laevis and Feeding Water

Zhao Rongbiao,Qin Zhanfen,Zhao Rusong,Xu Xiaobai~ (State Key Laboratory of Environmental Chemistry and Ecotoxicology,Research Center for Eco-Environmental Sciences,Chinese Academy of Sciences,Beijing 100085)  
A novel method has been developed for the determination of trace polychlorinated biphenyls congeners in the biota samples and water.The method includes liquid-liquid extraction or ultrasonic extraction,cleanup of sulfuric acid silica column separation,separation of florisil column and analyses of capillary gas chromatography equipped with()~(63)Ni electron-capture detection system(μ-ECD).Conditions for cleanup of(sulfuric) acid silica gel column and separation of florisil column were optimized.The average recoveries were 82%~115% for water,75%~135% for biotic samples,respectively.The limits of detection were 0.009~15.3 ng/L for feeding water,from 0.02 to 96.9 ng/g for the biota samples,respectively,the relative standard deviations were all below 6.9%.The method was successfully used for the analyses of trace polychlorinated(biphenyls) congeners in Xenopus laevis and feeding water.The results of quality control show that the method merits the reliable investigation.
【Fund】: 国家高技术研究发展计划(863计划No.2003AA646010);; 国家自然科学基金(No.20377044);; 国家重点基础研究项目(No.2003CB415005)资助
【CateGory Index】: O656.31
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