摘要
通过对故黄河表层底泥和底泥剖面样重金属元素含量的系统测试,运用地积累指数法和潜在生态危害指数法对故黄河底泥进行了重金属污染程度评价。地积累指数法评价结果表明,故黄河底泥基本未受Cr、Ni的污染,个别采样点受到重金属元素Cu和Pb的中等程度污染,大部分采样点受到Zn的中等程度及以上污染,且Zn含量分布范围宽,最大值与最小值相差较大。主要重金属元素的污染程度依次为:Zn>Cu>Pb。潜在生态指数法评价结果表明,故黄河底泥内重金属污染对生态的潜在危害很轻。
Heavy metal pollution in bottom sediment of abandoned Yellow River was assessed by using geo-accumulation index and potential ecological risk index.Results showed that some sampling points were moderately polluted by Cu and Pb,and most of sampling points were polluted by Zn.The sequence of pollution degrees ranked as Zn,Cu and Pb.Ecological hazardousness risk was very low.
出处
《环境科学与技术》
CAS
CSCD
北大核心
2006年第11期1-2,38,共3页
Environmental Science & Technology
基金
高等学校博士学科点专项基金资助项目(20030290010)
关键词
故黄河
底泥
重金属
地积累指数
潜在生态指数
abandoned Yellow River
bottom sediment
heavy metal
index of geo-accumulation
ecological risk index
