哈尔滨商业大学学报（自然科学版）2012，Vol.28Issue(5)：527-531,5.
三峡上游河流沉积物中重金属污染生态风险评价
Pollution characteristics and risks of heavy metals of sediments from rivers in upper three gorges
摘要
Abstract
The content and speciation of 8 heavy metals in surface sediments from the 6 rivers located in upper Three Gorges, southwest China, were investigated. Furthermore, the risks of heavy metals were discussed. With the 8 metal levels all close to their background values in soil environment in upper rivers of Three Gorges, the light pollutions were occurred in these rivers. Among of the 8 metals, Cd, Cu and Hg were to some extent accumulated in these riverine sediments. These 8 metals distributed with different speciation in riverine sediments. The percent of the form of available speciation was found largest in Cd in sediments, followed by Zn, Ni and Cr. The percentages for strong, moderate and light ecological risks were calculated to 5% , 37% and 58% , respectively, suggest a safe status for heavy metals in this zone.关键词
河流沉积物/重金属/形态/生态风险Key words
riverine sediments/ heavy metals/ speciation/ risks分类
资源环境引用本文复制引用
李永峰,曹政,刘方婧,程国玲..三峡上游河流沉积物中重金属污染生态风险评价[J].哈尔滨商业大学学报（自然科学版）,2012,28(5):527-531,5.基金项目
环境保护部环保行业公益性科研项目(200909043). （200909043）
