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当前位置: 首页 > 文章 > 渭河干流陕西段国控断面沉积物重金属分布及潜在生态危害评价 安徽农业科学 2011,39 (15) 374-376+382
Position: Home > Articles > Distribution and Potential Ecological Risk assessment of heavy metal in sediment of five national control-sections in of Weihe River in Shanxi province Journal of Anhui Agricultural Sciences 2011,39 (15) 374-376+382

渭河干流陕西段国控断面沉积物重金属分布及潜在生态危害评价

作  者：
花莉;张成;马宏瑞
单  位：
陕西科技大学资源与环境学院
关键词：
渭河;重金属;沉积物;风险评价
摘  要：
分析了渭河陕西段5个国控断面近岸沉积物中Cd、Pb、Cr、Zn、Cu、Ni 6种重金属元素的水平及垂直分布特征。结果表明,表层沉积物中Zn、Pb在整个河段都有富集,Cd在耿镇桥富集比较明显,其他元素的含量基本上都保持在自然背景水平。除Cd外,沉积物中主要金属元素含量之间存在明显的相关关系,并且受沉积物有机质含量的影响较大。采用Hakanson潜在生态危害指数法对渭河沉积物重金属的潜在生态危害进行了评估。重金属的潜在生态危害评价显示,耿镇桥断面Cd潜在生态风险中等,其他各断面重金属的潜在生态风险较小。
译  名：
Distribution and Potential Ecological Risk assessment of heavy metal in sediment of five national control-sections in of Weihe River in Shanxi province
作  者：
HUA Li et al(College of Resource and Environment,Shaanxi University of Science and Technology,Xi'an,Shaanxi 710021)
关键词：
Weihe River;Heavy metal;Sediment;Distribution;Hazard assessment
摘  要：
The horizontal and vertical distribution features of six kinds of heavy metal elements in the sediments of five national controlling sections of Weihei river in Shanxi province had been investigated,which were cadmium(Cd),lead(Pb),zinc(Zn),chromium(Cr),Nickel(Ni) and copper(Cu).The results demonstrated that there were highly significant variations among different sampling stations for the concentrations of tested metals.There appeared obvious Zn and Pb enrichment in sediment in all the studied area.Cd was found enrichment in one section.Concentration of Cu had close relationship with that of Pb,Cr,Ni and Zn.In addition,organic matter in sediment had significant effect on concentration of most metal except Cd.The substantial ecological risks of metals in sediment of the researched area had been evaluated by Hakanson index method.The results indicated that Cd in one section had middle level ecological risk while in other sections the ecological risks were considerable low.

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