多种方法评价城市表层土壤重金属污染的比较研究  

Comparative study on various methods of evaluating heavy metal pollution in urban topsoil

作　　者：闫欣荣 樊旭辉 

机构地区：[1]武警工程大学理学院,陕西西安710086

出　　处：《甘肃农业大学学报》2013年第1期118-124,共7页Journal of Gansu Agricultural University

基　　金：陕西省自然科学基础研究基金资助项目(2011JM1019);武警工程大学基础研究基金项目(WJY201106)

摘　　要：采用地积累指数法、内梅罗综合污染指数法和潜在生态危害指数法对研究区域内不同功能区和不同海拔地区的8种重金属污染程度进行了评价,并对3种方法的评价结果进行了综合比较.结果表明:5个功能区被污染程度由大到小分别为:工业区>交通区>公园绿地区>生活区>山区;8种元素的综合污染程度由大到小为:Hg>Cd>Cu>Cr>Pb>Zn>As>Ni,8种元素对该地区整体造成中度污染;随着海拔的增加,8种重金属污染程度迅速降低.There are a lot of evaluation methods of heavy metal pollution in the soil.Since single method has certain limitations and deficiencies,geo-accumulation index method,nemerow comprehensive pollution index method and potential ecological risk index method were used to evaluate eight heavy metal pollution in different functional areas and at different altitudes,meanwhile,the evaluation results of three methods were comprehensively compared.The results showed that pollution degree of five investigated functional areas were taking the order of industrial park traffic area park green area living area mountainous area.Pollution degree of eight elements were taking the order of HgCdCuCrPbZnAsNi.Eight heavy metal elements caused moderate pollution in the investigated area,and with altitude increasing,the pollution degree of eight heavy metal decreased rapidly.

关 键 词：城市土壤 重金属污染 地积累指数法 内海罗综合污染指数法 潜在生态危害指数法 

分 类 号：X508[环境科学与工程—环境工程]