滇西南锌厂周边农用地土壤重金属污染评价及来源解析  

Evaluation and Source Analysis of Soil Heavy Metal Pollution in An Industrial Plant in Southwestern Yunnan

作　　者：何洁 谭福民 包立[1,2] 张乃明 HE Jie;TAN Fu-min;BAO Li;ZHANG Nai-ming(College of Resources and Environment,Yunnan Agricultural University,Kunming 650201,China;Yunnan Soil Fertility and Pollution Restoration Laboratory,Kunming 650201,China)

机构地区：[1]云南农业大学资源与环境学院,云南昆明650201 [2]云南省土壤培肥与污染修复工程实验室,云南昆明650201

出　　处：《江西农业学报》2021年第11期138-144,共7页Acta Agriculturae Jiangxi

基　　金：国家重点研发计划项目(2018YFD0800603);云南省重点研发计划(2018BC003);云南省农业联合青年项目(2018FG001-103)。

摘　　要：深入探讨了滇西南某工业区周边土壤重金属污染现状及来源,测定分析了表层土壤中8项(铜、锌、铅、镉、汞、铬、镍、砷)重金属含量,采用单因子指数、内梅罗综合污染指数和潜在生态风险指数法对锌厂周边农用地土壤重金属污染进行了评价,并结合多元统计分析,揭示了研究区土壤重金属的主要污染来源。结果表明:Zn、Cd、Pb、As、Hg为重污染水平,其余重金属为轻度或无污染水平,综合污染指数显示,研究区整体属于重污染水平,研究区潜在综合生态风险指数RI的均值为495.41,整体属于高生态风险水平。多元统计分析表明:Cu、Zn、Pb、Hg、As、Cd污染来源具有较高的同源性,主要来源于工业活动,Ni与Cr这2种元素来源相似,主要是自然源。In order to deeply explore the status and source of heavy metal pollution in the surrounding soil of an industrial area in southwestern Yunnan,provide a reference basis for the management of such industrial areas and the surrounding farmland soil management,measurement and analysis of 8 items in the surface soil(Cu、Zn、Pb,、Cd、Hg,、Cr、Ni、As)heavy metal content,the single factor index,Nemero comprehensive pollution index and potential ecological risk index method were used to evaluate the heavy metal pollution of the agricultural land around the zinc plant,and combined with the multivariate statistical analysis,it revealed the heavy metal content of the soil in the study area.The main source of pollution.The results show that Zn,Cd,Pb,As,and Hg are heavy pollution levels,and the remaining heavy metals are light or no pollution levels.The comprehensive pollution index shows that the study area as a whole is at a heavy pollution level.The average value of the potential comprehensive ecological risk index RI in the study area is 495.41,The overall level is of high ecological risk.Multivariate statistical analysis shows that the pollution sources of Cu,Zn,Pb,Hg,As,and Cd have great homology,which are mainly from industrial activities.Ni and Cr have similar sources and are mainly natural sources.

关 键 词：风险评价 来源分析 滇西南 

分 类 号：X131.3[环境科学与工程—环境科学]