新庄孜矿区土壤重金属分布与来源分析  

Soil Heavy Metal Distribution and Source Analysis in Xinzhuangzi Coalmine Area

作　　者：徐仲雨 周春财[1] 孙浩 刘桂建[1] Xu Zhongyu Zhou Chuneai Sun Hao Liu Guijian(School of Earth and Space Sciences, University of Science and Technology of Chin Key Laboratory of Crust - Mantle Materials and Environments, CAS, Hefei, Anhui 230026)

机构地区：[1]中国科学技术大学地球和空间科学学院,中国科学院壳幔物质与环境重点实验室,安徽合肥230026

出　　处：《中国煤炭地质》2017年第9期41-44,共4页Coal Geology of China

基　　金：安徽省国土资源科技项目(2015-K-13);安徽省公益性地质工作项目(2015-g-37)

摘　　要：通过ICP-OES与化学逐级提取等手段,对新庄孜矿区煤矸石和土壤中Cd、Mn、Ni、Pb、V、Zn等6种重金属的含量,以及煤矸石中重金属赋存状态进行了分析研究。通过相关性分析以及聚类分析等手段推测了土壤重金属的来源,并利用地积累指数与潜在环境风险评价对矿区土壤的污染状况进行了分析。结果表明,煤矸石中各重金属赋存状态主要以残渣态和Fe-Mn氧化物结合态为主。下风向土壤重金属同源性较强,主要来源应为矸石山风化;垂直风向土壤中Pb来源主要为矸石山,Cd主要为人为来源,其余元素主要为自然来源。Through the means of ICP-OES and chemical sequential extraction carried out analysis and study on coal gangue and soil Cd,Mn,Ni,Pb,V and Zn six heavy metal contents,as well as coal gangue heavy metals hosting state in the Xinzhuangzi coalmine area. Through correlation analysis and cluster analysis speculated the source of soil heavy metals; and then analyzed soil pollution situation using geoaccumulation index and potential environmental risk assessment. The coal gangue heavy metal hosting is mainly in residual state and Fe-Mn oxide bound state. Leeward soil heavy metals have stronger homology,main source should be gangue dump weathering; windward soil main Pb source should be gangue dump,Cd artificial source,while other elements natural source.

关 键 词：新庄孜矿区 矿区土壤 煤矸石 重金属 赋存状态 

分 类 号：X53[环境科学与工程—环境工程]