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东湖水体中多氯联苯的研究 |
习志群1,2, 储少岗1,2, 徐晓白1,2, 张甬元3,4, 徐盈3,4
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1.中国科学院生态环境研究中心 北京;2.100085;3.中国科学院水生生物研究所 武汉;430072
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摘要: |
于1994年6月,采用高分子多孔聚合树脂对武汉东湖水进行富集采样,样品经净化后利用毛细管柱色谱进行多氯联苯(PCBs)总量及同类物(congeners)的分离测定。结果表明,东湖水样中PCBs总含量为2.7 ng/L,检出的20多个PCBs同类物其含量分别在0.002-1.12 ng/L范围内。其同类物中低氯取代的PCBs相对含量明显高于工业用商品PCBs中的相应含量。 |
关键词: PCBs 水体污染 武汉东湖 |
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基金项目:国家自然科学基金项目,29477286号 |
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DETERMINATION OF POLYCHLORINATED BIPHENYLS IN DONGHU LAKE |
XI Zhi-qun,CHU Shao-gang,XU Xiao-bai,ZHANG Yong-yuan,XU Ying
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1.Research Center for Eco-Environmental Sciences, The Chinese Academy of Sciences, Beijing, 100085;2.Institute of Hydrobiology, The Chinese Academy of Sciences, Wuhan, 430072
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Abstract: |
Water samples were collected from Donghu Lake in June 1994 and preconcentrated using XAD-2 resin. The polychlorinated biphenyls (PCBs) fraction of the sample was analyzed by high resolution GC. The concentration of PCBs in Donghu Lake was 2.7 ng/L and the concentrations of individual congeners of PCBs ranged between 0.002 and 1.12 ng/L. The percentages of congeners with a relatively small number of substituted chlorine atoms in the sample were apparently higher than those in commercial PCBs. |
Key words: Polychlorinated biphenyls, Water pollution, Donghu Lake of Wuhan |