摘要
重金属元素易于累积,生态效应影响强烈。分析了陕豫接壤的西峪河水系沉积物中Hg、Pb、Cd、As、Cr、Cu、Zn7种重金属元素的含量,根据地区参比值,评价了金矿活动对西峪河底泥的污染。结果显示Hg、Pb是主要的污染元素;进而用潜在生态危害指数法探讨了重金属元素污染的潜在生态危害性,认为整个西峪河流域的Hg、Pb潜在生态危害很强,Cd具有强的潜在生态危害,而Cr、As、Zn的潜在生态危害性轻微。
Heavy metals are easy to accumulative, which may yield strong ecological effects. This paper analyzes contents of the seven heavy metals Hg, Pb, CA, As, Cr, Cu and Zn in sediments of the Xiyu River on the Shaanxi-Henan border. According to the contrast parameter, the pollution of bottom sediments of the Xiyu River by gold mining operations was evaluated. The results show that mercury and lead were main pollution elements. The potential ecological risk of heavy-metal pollution is discussed using the potential ecological risk index. The authors think that： the potential ecological risk of mercury and lead in the whole Xiyu River drainage area is very strong and Cd has strong potential ecological risk, while the potential ecological risks of Cr, As and Zn are weak.
出处
《地质通报》
CAS
CSCD
北大核心
2008年第8期1286-1291,共6页
Geological Bulletin of China
基金
中国地质调查局国土资源调查项目<小秦岭金矿区环境地质问题调查与评价>(编号:1212010741003)
<重点矿区环境地质问题专题调查>(编号:200412300057)
<陕西潼关金矿区环境地质问题专题调查>(编号:200412300057-1)资助。
关键词
小秦岭金矿区
河流底泥
重金属元素
累积污染
潜在的生态危害
Xiaoqinling gold mining area
river bottom mud
heavy metals
cumulative pollution
potential ecological risk
