某关停铅蓄电池企业土壤重金属污染特征及生态风险评价  

Soil Heavy Metal Pollution Characteristics and Ecological Risk Assessment of a Closed Lead Acid Battery Enterprise

作　　者：罗刚 徐雪妮 郦薇 LUO Gang;XU Xueni;LI Wei(Jiangsu Zhenjiang Environmental Monitoring Center,Zhengjiang Jiangsu 212009,China;Zhenjiang Ecological Environment Monitoring Station,Zhenjiang Jiangsu 212002,China)

机构地区：[1]江苏省镇江环境监测中心,江苏镇江212009 [2]江苏省镇江市生态环境监测站,江苏镇江212002

出　　处：《新疆环境保护》2024年第1期1-9,共9页Environmental Protection of Xinjiang

基　　金：2021年度江苏省镇江环境监测科研基金项目(ZJ2103);2021年江苏省镇江市社会发展指导性科技计划项目(FZ2021051)。

摘　　要：为探明江苏省某铅蓄电池企业生产6年关停后对该地块土壤是否造成污染,对土壤中Pb、Cu、Zn、Hg、As、Cd、Ni、Cr这8种重金属采样分析,基于主成分分析和径向基函数(RBF)插值法分析地块土壤重金属的污染分布特征。利用单因子指数法和Nemerow综合指数法对污染地块土壤环境质量分析,对于涉及人体健康生态风险评价采用Hakanson潜在生态危害指数法开展综合评价。结果表明:研究区域土壤已遭受明显的人为外源重金属污染,且局部重金属富集程度较高,纵向污染区域主要集中在100cm以上土壤中,区域整体污染程度达到轻度污染,其中危废库局部土壤受污染程度已为中度污染,建议对该单元土壤开展进一步风险评估和修复;研究区域土壤尚不存在潜在生态风险,但是需重点关注危废库构筑物单元的土壤环境质量,主要威胁来自土壤中的镉,其EiCd潜在生态风险指数等级已达到强的级别。建议该地块后续开发利用时不作为农用地使用或进行局部区域土壤修复治理。In order to find out whether a lead acid battery enterprise in Jiangsu Province caused soil pollution after shut down of the production for 6 years,samples of 8 heavy metals in the soil,including Pb,Cu,Zn,Hg,As,Cd,Ni and Cr,were analyzed.based on principal component analysis and radial basis function(RBF)interpolation method,the pollution distribution characteristics of heavy metals in the soil of the plot were analyzed.The single factor index method and Nemerow comprehensive index method were used to analyze the soil environmental quality of the contaminated plots,and the Hakanson potential ecological hazard index method was used to carry out the comprehensive evaluation for the ecological risk assessment involving human health.The results indicate that the soil in the study area has suffered significant anthropogenic exogenous heavy metals pollution,and the concentration of local heavy metals is relatively high.The vertical pollution area is mainly concentrated in the soil above 100 cm.The overall pollution level of the area is mild pollution,and the local soil of the hazardous waste storage is moderately polluted.It is recommended to conduct further risk assessment and remediation of the soil in this unit.There is no potential ecological risk in the soil of the study area,but special attention should be paid to the soil environmental quality of the hazardous waste storage structure units.The main threat is cadmium in the soil,and its EiCd potential ecological risk index has reached a strong level.It was suggested that this plot should not be used as agricultural land or local soil restoration and treatment in the subsequent development and utilization.

关 键 词：铅蓄电池 径向基函数插值法 Nemerow综合指数法 人体健康风险 潜在生态危害指数 

分 类 号：X53[环境科学与工程—环境工程]