生态与农村环境学报2017，Vol.33Issue(2)：142-149,8.DOI:10.11934/j.issn.1673-4831.2017.02.007
黔西北炼锌矿区土壤重金属形态分析及风险评价
Forms of Heavy Metals in Soils of Zinc Mining Area in Northwestern Guizhou Province and Their Environmental Risks
摘要
Abstract
Contents and spatial distribution of heavy metals in the soils of the zinc mining area in northwestern GuizhouProvince were investigated and characterized and pollution degrees and risks of the heavy metals were analyzed and assessed with the Tessier sequential extraction method and risk assessment code (RAC),respectively.Results show that the average contents of all the studied heavy metals,except Cr and Ni,were higher than their respective background values of Guizhou Province.The soils were seriously contaminated with Pb,Zn and Cd in samples.Fractionation of the pollutants shows that in the soils and slag,Pb,Zn and Mn existed mainly in the form of residue (accounting for 45.91％,55.11％ and 42.71％ of their respective total),and in ferromanganese bound form (33.33％,28.26％ and 41.78％),Cd in exchangeable form and carbonate bound form,together making up 30.63％;Cu in organo-bound form (65.11％) and then in the form of residue (30.79％);and Cr and As in the form of residue (both exceeding 90％).RAC shows that Cd in the soil poses a very high potential ecological risk,while the others have relatively low ones.关键词
炼锌矿区/镉(Cd)/重金属形态/风险评价Key words
zinc mining area/cadmium/speciation of heavy metal/risk assessment分类
资源环境引用本文复制引用
冯艳红,郑丽萍,应蓉蓉,张亚,林玉锁,王国庆..黔西北炼锌矿区土壤重金属形态分析及风险评价[J].生态与农村环境学报,2017,33(2):142-149,8.基金项目
环保公益性行业科研专项(201409041,201409042) （201409041,201409042）
2015年中央级公益性科研院所基本科研业务专项 （）
中国工程院全国土壤环境保护及污染防治战略咨询研究项目 （）
江苏省自然科学基金(BK20130104) （BK20130104）
国家自然科学基金(41301278) （41301278）
