安徽某停产蓄电池厂周边土壤重金属污染的现状与评价  

Status Quo and Assessment on Heavy Metals Pollution of Soils around a Shut-down Battery Factory in Anhui

作　　者：杨莹[1] 张立[1] 郑权[1] 

机构地区：[1]安庆医药高等专科学校,安徽安庆246052

出　　处：《廊坊师范学院学报（自然科学版）》2016年第1期73-76,共4页Journal of Langfang Normal University(Natural Science Edition)

基　　金：2016年安徽省高校优秀青年人才支持计划重点项目(gxyq ZD2016509)

摘　　要：为了解与评价安徽某停产蓄电池厂周边土壤重金属Zn、Cu和Pb的污染情况,采集该厂1500m范围内的表层土壤样品10份进行分析。以安徽地区土壤背景值和《国家土壤环境质量标准》二级水平作为参照标准,分别采用单因子指数法、Nemerow综合指数法和Hakanson潜在生态风险评价法进行评价。结果表明,土壤样品中Zn、Cu和Pb的平均含量分别是背景值的1.62、1.82和4.68倍,但含量均未超过国标二级水平。三种重金属的单因子指数平均值都小于0.7,表明这三种金属都未对蓄电池厂周边的土壤造成污染。Nemerow综合指数平均值为0.47,表明土壤整体处于清洁水平。三种重金属潜在生态风险排序为Pb>Cu>Zn,潜在生态风险指数小于150,表明该区域的潜在生态风险轻微。To learn and evaluate the soil heavy metals pollution of Zn,Cu and Pb around a shut-down battery factory in Anhui,a total of 10 topsoil samples over an area of 1500 m were collected. According to the standard of soil back values of Anhui and Soil Environment Quality（ II）,the single index method,the Nemerow comprehensive index method and Hakanson potential ecological risk index method were adopted. The results indicated that the average concentrations of Zn,Cu and Pb in samples were 1. 62,1. 82 and 4. 68 times as much as the standard of soil back values of Anhui,but these three heavy metals concentrations did not exceed Soil Environment Quality（ II）. The average values of single index of three heavy metals were all less than 0. 7,the soil around battery factory was not polluted. The average value of Nemerow comprehensive index was 0. 47 which indicated that the soil in the clean level. The order of the potential ecological risk of three heavy metals was Pb Cu Zn,and the value of potential ecological risk index was less than 150 which indicated that the potential ecological risk for the area was slight.

关 键 词：土壤重金属 污染程度 潜在生态风险 安徽 

分 类 号：X53[环境科学与工程—环境工程]