南方某铅锌矿矿区周边农用地土壤重金属污染特征及生态风险评价  

Pollution Characteristic and Ecological Risk Assessment of Heavy Metals in Farmland Soil Around a Lead-zinc Mining Area in South China

作　　者：廖经慧 李化伟 滕飞 骆检兰 Liao Jinghui;Li Huawei;Teng Fei;Luo Jianlan(Geophysical and Geochemical Survey Institute of Hu'nan,Hu'nan,410114)

机构地区：[1]湖南省地球物理地球化学调查所,湖南410114

出　　处：《当代化工研究》2023年第17期87-89,共3页Modern Chemical Research

摘　　要：铅锌矿开采过程中重金属易于迁移至周边土壤,可能造成周边农田的重金属污染。本文选取湖南省某典型铅锌矿区周边农田土壤为研究对象,通过测定土壤pH值和重金属Pb、Zn、Cd、As、Hg、Cu、Ni、Tl的含量,并多方法联合应用综合评价研究区的重金属污染状况。结果表明,矿区周边水田土壤受到Cd、Pb、As、Zn、Cu、Tl不同程度的污染,存在极强潜在生态风险,风险主要来自Cd、Pb、As。整体来看,研究区内水田已不适合作为农用地用途,需对区域内土壤采取一定的调控措施。研究结果反应了该矿区农用地土壤环境质量状况,并为后期污染防治提供参考。The heavy metals are easy to migrate to the surrounding soil in the mining process of lead and zinc,resulting in heavy metal pollution in the surrounding farmland.In this paper,the paddy field soil around a typical lead-zinc mining area in Hu'nan Province as research object,analyzed the pH and contents of Pb,Zn,Cd,As,Hg,Cu,Ni,Tl in the soil,the pollution status of the heavy metal in soil of the study area was comprehensively evaluated by multiple methods.Results showed that,the farmland around the mining area is polluted by Cd,Pb,As,Zn,Cu and Tl in varying degrees.Comprehensive potential ecological risk indexes show that there is a very serious risk,among which Cd,Pb and As.On the whole,the paddy field in the study area is not suitable for agricultural land use,and some regulation measures should be taken to control the soil pollution in this area.The results reflect the quality of farmland soil in the study area and provide some reference for heavy metals pollution management.

关 键 词：铅锌矿区 农用土壤 重金属污染 风险评估 

分 类 号：X53[环境科学与工程—环境工程]