皖北朱仙庄矿塌陷湖水域重金属含量特征及其源解析  

Characteristics and Source Identification of Heavy Metals in Subsidence Lake in Zhuxianzhuang Coal Mine in the North of Anhui Province,China

作　　者：马莉[1,2,3] 桂和荣[2] 

机构地区：[1]蚌埠学院材料与化学工程学院 [2]宿州学院安徽省矿井勘探工程技术研究中心 [3]中国科学技术大学地球和空间科学学院

出　　处：《地球与环境》2017年第3期277-282,共6页Earth and Environment

基　　金：国家自然科学基金项目(41173106);安徽省高校自然科学研究项目(KJ2013B265;KJ2016A459)

摘　　要：以皖北朱仙庄矿塌陷湖水域为研究对象,通过现场调查取样,室内测试分析等手段,对Pb、V、Cr、Cu、Co、Ni 6种重金属元素的含量特征进行研究,结果表明,塌陷湖6种重金属元素含量均值的高低顺序为V>Cu>Ni>Pb>Cr>Co,变异系数依次为Pb>Co>Cr>Cu>Ni>V,其中Pb、Co变异系数分别为99.7%和93.6%,空间分异大。箱体图显示,6种重金属元素的含量均不同程度高于环境背景值,塌陷湖Ⅱ中6种重金属元素含量较高,受人类活动影响较大,塌陷湖Ⅳ受人类活动影响最小。聚类分析和主成分分析表明,朱仙庄矿塌陷湖水域重金属元素来源存在差异,其中Pb、Cu来源于煤矸石淋溶作用;V、Co来源于燃煤作用;Cr来源于自然界,Ni元素具有来源的复合性。The subsidence lake in Zhuxianzhuang coal mine was selected as a target area to study the distribution of heavy metal con- centrations（Pb, V, Cr, Cu, Co and Ni）based on the field investigation, sampling, indoor test and analysis. Results indicate that the heavy metal concentrations in water are in the order of V〉Cu〉Ni〉Pb〉Cr〉Co, whereas the variations coefficients of heavy metals fol- lowed the order of Pb〉Co〉Cr〉Cu〉Ni〉V. Two of them （ Pb and Co） have high coefficients of variations （ 99.7% and 93.6%, respective- ly）, suggesting that the spatial variations of them are significant. The box diagrams imply that all of the heavy metals concentrations ex- ceed background values with different extents ; water samples from the pool II have the highest concentrations of heavy metals, indica- ting the significant contribution from the human activities, whereas the samples from the pool IV have the lowest metal concentrations. Cluster and principal component analyses suggest that the sources of these heavy metals are different; Pb and Cu mainly originate from coal gauge dump; V and Co are mainly from coal firing, Cr is mainly controlled by geological weathering, while Ni is of multiple sources.

关 键 词：朱仙庄矿 塌陷湖 重金属 源解析 

分 类 号：X131.2[环境科学与工程—环境科学]