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湘江株洲段河流沉积物的重金属污染评价

Wei DING, Xin-yue CHEN,Mao-cai NAN

Guangzhou Chemical Industry（2019）

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Abstract
测定了湘江株洲段河流沉积物中重金属的含量,运用了地累积指数法和潜在生态危害指数评价法对重金属污染进行了评价.数据表明:株洲段Cr、Cd、Pb、As和Hg含量的平均值分别为71.27、10.06、87.66、158.69、0.21 mg·kg-1,分别是长株潭地区底泥背景值的1.19、20.12、3.51、10.58、0.85倍,除Hg外均超过长株潭地区底泥背景值.根据潜在生态危害系数法的计算结果,湘江株洲段沉积物中重金属污染程度为Cd>As>Hg>Pb>Cr;而地累积指数法则表明其污染程度为Cd>As>Pb>Cr>Hg.
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