太谷县玛钢厂周边蔬菜地土壤重金属污染现状及生态风险评价  

Status and Ecological Risk Assessment of Heavy Metal Pollution in Vegetable Soils Around Magang Plant in Taigu County

作　　者：马晓瑾 刘子姣[2] 

机构地区：[1]忻州市科技情报研究所,山西忻州034000 [2]山西农业大学资源环境学院,山西太谷030801

出　　处：《山西科技》2017年第6期92-96,共5页Shanxi Science and Technology

摘　　要：为了解太谷县玛钢厂周边蔬菜地土壤重金属的污染现状,在工厂附近蔬菜地采集了30份土壤样品,分别测定了样品中铬、镉、砷、汞、铅、铜、锌、镍的质量分数,并对其进行了污染现状评价及生态风险评价。结果表明:研究区土壤重金属单项污染指数的特征表现为Ni>Cu>Cr>As>Hg>Zn>Pb>Cd;就综合污染指数而言,Hg元素是重金属污染的主要因子;从多种重金属潜在生态风险综合指数(RI)来看,有6.7%的采样点处于强度危害水平,有63.3%的采样点处于中等危害水平。In order to learn the current situation of heavy metal pollution of the vegetable soils around Magang plant in Taigu county,this paper collectes 30 soil samples from the vegetable soils near the factory,measures the mass fraction of Cd,Cr,As,Hg,Pb,Cu,Zn,Ni in the sample,and evaluates pollution status and ecological risk assessment.The results show that,the characteristic of the single pollution index of soil heavy metals in the study area is expressed as Ni Cu Cr AsHg Zn Pb Cd;for comprehensive pollution index,Hg is the main factor of heavy metal pollution;from the potential ecological risk index（RI）of multiple heavy metals,6.7% of the sampling sites are at hazard level,and 63.3% of the sampling sites are at moderate hazard levels.

关 键 词：蔬菜地 重金属 生态风险评价 太谷县玛钢厂 

分 类 号：X825[环境科学与工程—环境工程]