摘要
文章以湖南废弃铅锌矿区土壤为研究对象,对6个土壤功能区所采集的83个表层土样重金属含量污染特征及有效性进行分析,并开展了11个剖面土壤重金属纵向分布研究。结果表明,土壤样品中Cd、As、Zn、Pb平均含量分别为8.42 mg·kg-1、90.9 mg·kg-1、1 122 mg·kg-1、878.6 mg·kg-1,超标的样品数占总数分别为86%、60%、39%、30%。土壤样品中有效态Cd、As、Zn、Pb平均含量分别为0.17 mg·kg-1、1.18 mg·kg-1、2.34 mg·kg-1、11.55 mg·kg-1。剖面样重金属污染较重,各采样区的重金属纵向分布规律不一。
With soil of discarded mining areas in Hunan as research object,analysis of pollution characteristics and effectiveness of heavy metals of eighty three surface soils in six area,and distributions was also studiedin eleven soil profiles.The results indicate that average concentrations of Cd,As,Zn and Pb were 8.42 mg·kg-1、90.9 mg·kg-1、1 122 mg·kg-1、878.6 mg·kg-1,respectively.The over standard rate of the four heavy metal were respectively86%、60%、39%、30%.Average content of available Cd,As,Zn and Pb were 0.17 mg·kg-1、1.18 mg·kg-1、2.34 mg·kg-1、11.55 mg·kg-1,respectively.Profile soils were in severe pollution,and longitudinal distribution law of its heavy metal was very different.
出处
《企业技术开发》
2016年第2期5-7,共3页
Technological Development of Enterprise
基金
长沙市科技计划项目"典型铅锌矿区Cd
As
Pb复合污染土壤化学固定-植被恢复技术研究"(K1403043-31)
关键词
矿区土壤
土壤重金属
污染
有效性
Mine soil
soil heavy metals
pollution
effectiveness
