廊坊地区土壤重金属污染程度评价  

THE EVALUATION OF SOIL HEAVY METAL POLLUTION DEGREE IN LANGFANG

作　　者：蔡奎[1] 栾文楼[1] 李超[1] 陈智贤[1] 谷海峰[1] 宋泽峰[1] 

机构地区：[1]石家庄经济学院资源与环境工程研究所,河北石家庄050031

出　　处：《物探与化探》2011年第5期675-679,共5页Geophysical and Geochemical Exploration

基　　金：河北省农业地质调查项目(200414200007)

摘　　要：利用河北省多目标地球化学调查资料,研究了廊坊地区表层土壤中重金属元素As、Cd、Cr、Hg、Pb的富集特征与污染程度。与我国土壤元素背景值相比,廊坊地区表层土壤中Hg的富集系数较大;与研究区元素背景值相比,Cd、Hg富集系数较大,富集程度依次为Hg>Cd>Pb>Cr>As。地积累指数污染评价结果表明,以全国土壤背景值计算,Cd为轻—中度污染;以研究区背景值计算,Hg为轻—中度污染,As、Cd、Cr、Pb未造成污染。Using the multi-objective geochemical survey data obtained from Langfang, the authors studied enrichment characteristics and pollution degrees of As, Cd, Pb, Cr and Hg, which are five kinds of heavy metal elements in surface soil. Also, the five kinds of heavy metals were comparatively investigated with the quality evaluation method. The single factor index method indicates that Cd causes rather heavy pollution. Geoaccumulation index of pollution evaluation shows that, viewed from the background value of soil heavy metals, Cd causes mild-moderate pollution, while viewed from the background value of the study area, Hg causes mild-moderate pollution, whereas As, Cd, Cr, Pb do not cause pollution.

关 键 词：廊坊地区 重金属 方法对比 单因子指数法 地积累指数法 

分 类 号：P632[天文地球—地质矿产勘探]