节能灯企业集聚区周边农田土壤重金属污染评价  

Evaluation of soil heavy metal pollution of farmlands surrounding industrial enterprises producing energy-saving bulbs

作　　者：史坚[1] 廖欣峰[1] 祝小祥[2] 楼中[2] 方晓波[3] 周侣艳[1] 余海霞[1] 姚琳[1] 

机构地区：[1]杭州市环境监测中心站,杭州310007 [2]临安市农业技术推广中心,临安311300 [3]浙江农林大学环境与资源学院,临安311300

出　　处：《上海农业学报》2014年第2期90-94,共5页Acta Agriculturae Shanghai

基　　金：杭州市社会发展科研专项(20110533B08);杭州市重大科技创新项目(20122513A05);浙江农林大学发展基金预研项目(2010FK042);浙江农林大学人才启动项目资助

摘　　要：为了解节能灯生产企业周边土壤重金属污染状况,采集并分析了102个土壤样品的Hg、As、Cu、Pb、Zn、Cd、Cr、Ni、Co和Mn等重金属含量,采用单因子污染指数和内梅罗综合污染指数对土壤重金属污染程度进行了分析,并基于地统计学分析了土壤重金属空间分布特征。结果表明:节能灯生产企业周边土壤重金属Hg、As、Cu、Pb、Zn、Cd、Cr、Ni、Co、Mn的平均含量分别为0.27 mg/kg、3.51 mg/kg、17.74 mg/kg、54.84 mg/kg、70.34 mg/kg、0.1 5 mg/kg、25.12 mg/kg、10.31 mg/kg、7.36 mg/kg、134.43 mg/kg,均未超过国家土壤环境质量二级标准,但Pb和Hg元素平均含量超过浙江省土壤背景值,分别是对应背景值的1.80倍和1.69倍。单因子污染指数评价表明,不同重金属元素平均污染程度为:Pb>Hg>Cd>Zn>Cu>Co>As>Cr>Ni>Mn;内梅罗综合污染指数评价表明,101个土壤样点受到不同程度的重金属污染,污染程度为轻污染、中污染和重污染水平所占的比率分别为86.27%、9.80%和2.94%。土壤中Pb和Hg两种重金属元素污染相对严重,与交通、节能灯生产企业空间分布特征具有一定的对应性。In order to explore the soil heavy metal pollution in the surrounding areas of enterprises producing energy-saving bulbs, 102 topsoil samples were collected and analyzed in terms of Hg,As,Cu, Pb, Zn,Cd, Cr, Ni, Co and Mn contents, and the heavy metal pollution of soil was evaluated by single factor pollution index and Nemerow integrated pollution index. The spatial distribution of soil heavy metals was also analyzed by geostatistics methods. The results showed that the average contents of Hg, As, Cu, Pb, Zn, Cd, Cr, Ni. Co and Mn in the soil were 0.27,3.51,17.74,54.84,70.34,0, 15,25.12,10.31,7.36 and 134.43 mg/kg respectively, not exceeding the secondary standards of the national soil environment; but the average Pb and Hg contents were over the soil background values of Zhejiang Province,being 80% and 69% higher than the soil background values respectively. The evaluation by single factor pollution index showed that the descending order of pollution degrees was Pb〉Hg〉cd〉Zn〉Cu〉Co〉As〉Cr〉Ni〉Mn. The evaluation by Nemerow integrated pollution index showed that 101 sampling points of soil were contaminated to different extents by heavy metals, and the proportions of light pollution,pollution and heavy pollution were 86.27%,9.80% and 2.94% respectively. The soil pollution caused by both Pb and Hg heavy metals was relatively heavy, which somewhat corresponded to the spatial distributions of traffic and enterprises producing energy-saving bulbs.

关 键 词：土壤污染 重金属污染 污染指数 工业区 节能灯 

分 类 号：S151.9[农业科学—土壤学]