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
徐仲雨,周春财,孙浩,刘桂建
摘要(Abstract):
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。
关键词(KeyWords): 新庄孜矿区;矿区土壤;煤矸石;重金属;赋存状态
基金项目(Foundation): 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)
作者(Author): 徐仲雨,周春财,孙浩,刘桂建
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