苏州市农田土壤重金属污染状况研究  

Study on Heavy Metal Pollution in Agricultural Soils of Suzhou

作　　者：沈建伟[1] 徐加宽[2] 刘建国[1] 王明新[1] 柴育红[1] 

机构地区：[1]常州大学环境与安全工程学院,江苏常州213164 [2]常州市农林局,江苏常州213001

出　　处：《环境科学与技术》2010年第S2期87-89,93,共4页Environmental Science & Technology

基　　金：国家自然科学基金项目(31071350;70901035);江苏省自然科学基金项目(BK2008144);常州市农业科技攻关计划项目(CE20102023)

摘　　要：通过对苏州市7个辖区(市)443个取样点的农田土壤重金属含量进行取样检测,并采用单项污染指数法和综合污染指数法对土壤污染状况进行评价。结果表明:苏州市土壤重金属污染总体情况较轻,全市综合污染指数(P综)小于0.7,属安全等级,但部分区(市)重金属污染情况较为严重,如吴中区和昆山市的土壤重金属综合污染指数分别达到0.938和0.800,达到警戒限(0.7<P综≤1.0),张家港市的土壤重金属综合污染指数为0.700,接近警戒限;土壤重金属污染分布情况为离城区较近、人口稠密、工业较集中的区域,土壤重金属污染较严重;主要重金属污染元素为铜(Cu)、镉(Cd)和汞(Hg)。The agricultural soils in 443 places,7 areas of Suzhou were sampled and tested for heavy metal concentrations.The main results are listed below: The soils are only slightly polluted,and the compositive pollution index is less than 0.7,a safe grade.But some areas are more seriously polluted,such as Wuzhong and Kunshan areas,and their compositive pollution indexes are 0.938 and 0.800 respectively,reaching cautionary grade(0.7～1.0);The levels of heavy metal pollution are higher in the areas near city zones,with dense population and concentrated industries;The major heavy metal pollutants are copper(Cu),cadmium(Cd) and mercury(Hg).

关 键 词：苏州 土壤 重金属污染 评价 

分 类 号：X53[环境科学与工程—环境工程]