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Assessment of Heavy Metal Pollution in Sediment and Potential Ecological Risk in Upper Reach of Jinsha River
Author(s): 
Pages: 91-94
Year: Issue:  1
Journal: Environmental Science Survey

Keyword:  底泥重金属地质积累指数潜在生态风险评价金沙江上游;
Abstract: 对金沙江上游河段4个监测断面底泥中Cr、Pb、Zn、As、Hg、Cu和Cd 7种重金属含量进行分析研究,并进行潜在生态风险评价.结果表明,除Cd和As外,其他重金属的含量均符合GB15618-1995一级标准.Cd的富集程度最高,各采样点底泥中Cd含量均超过三级标准.臧曲河和相古底泥中的As含量高于三级标准.各监测断面的潜在生态风险都很高,Cd的潜在危害指数远大于其他金属,Cd是导致金沙江上游底泥中重金属潜在生态风险增加的主要原因.不同底泥的潜在生态风险依次为:臧曲河>相古>奔子栏>河坡.
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