摘要
测定了滇池8个断面表层沉积物中重金属和有机质的含量,采用地积累指数(I-geo)法对沉积物中重金属(Cu、Zn、Pb及Cd)污染物进行了评价。结果表明,除Cd外,Cu、Zn及Pb在沉积物中的含量较高,这几种元素的含量顺序为Zn>Cu>Pb>Cd。通过对滇池沉积物中重金属和有机质含量间的相关性研究发现,除了Pb与有机质的相关性较好,其余重金属与有机质的相关性较差。在研究的8个断面中,发现重金属(除Cd)外,大部分污染都在中等程度以上,其污染程度顺序为Cu>Pb>Zn>Cd,表明滇池沉积物已受到严重污染。
The contents of heavy metals and organic matter in surface sediments from 8 sections of the Dianchi Lake were investigated.The method of index of geo-accumulation was used to assess the heavy metals pollution（Cu,Zn,Pb and Cd）.The results show that the concentrations of heavy metals（except for Cd） were high in the sediments.In terms of concentration,the heavy metals followed a decreasing order of ZnCuPbCd in the sediments.Relativities between heavy metals and organic matter in the sediments were studied and found that relationship between them were insignificant（except for Pb）.In addition,the results also find that the pollution degrees of most of heavy metals were higher than moderate of them,and pollution degrees of the heavy metals followed the sequence of CuPbZnCd.
出处
《安徽农业科学》
CAS
2012年第11期6735-6737,6813,共4页
Journal of Anhui Agricultural Sciences
基金
云南省教育厅科学研究基金(2011Y269)
云南省应用基础研究计划(2011FZ135)
关键词
滇池
沉积物
重金属
分布
地积累指数法
Dianchi
Sediment
Heavy metals
Distribution
Index of geo-accumulation
