某矿区土壤重金属背景值调查与重金属污染现状评价  

Survey of Background Values of Heavy Metal in Soil in a Mining Area and Assessment of Heavy Metal Pollution

作　　者：张永康[1,2,3] 曹耀华 柳林[1,2,3] 冯乃琦 王庆[1,2,3] 王振宁 ZHANG Yong-kang;CAO Yao-hua;LIU Lin;FENG Nai-qi;WANG Qing;WANG Zhen-ning(Zhengzhou Institute of Multipurpose Utilization of Mineral Resources,CAGS,Zhengzhou 450006,China;Key Laboratory for Polymetallic Ores'Evaluation and Utilization,MLR,Zhengzhou 450006,China;Northwest China Center for Geoscience Innovation,Xi’an 710054,China)

机构地区：[1]中国地质科学院郑州矿产综合利用研究所,郑州450006 [2]国土资源部多金属矿评价与综合利用重点实验室,郑州450006 [3]西北地质科技创新中心,西安710054

出　　处：《有色金属（冶炼部分）》2019年第10期74-79,共6页Nonferrous Metals（Extractive Metallurgy)

基　　金：中国地质调查局地质调查项目(DD20190269,DD20160073)

摘　　要：测试了某铜镍矿区土壤重金属元素含量,分析了铜镍矿区和对照区土壤背景值。采用地累积污染指数法和单因子指数法评价了研究区土壤重金属污染状况,分析了水流、风力等对废石堆场周边区域重金属扩散、传播的影响。结果表明:研究区是Ni、As元素高背景区,研究区土壤环境质量除As元素超标外,总体质量较好,As元素超标与该地区背景值偏高有关。废石堆场周边区域,水流、风力等因素对重金属扩散传播作用不明显。Contents of heavy metal elements(As,Cd,Hg,Pb,Cu,Zn,Cr,Ni)in soil samples were measured.Background values of soil in control area as well as copper and nickel mining area were analyzed.Heavy metal pollutions in soil of the study area were evaluated based on single factor index method and Muller’s Geo-accumulation pollution index method.Influence of water flow,wind and other factors on diffusion and transmission of heavy metal in soil surrounding waste-rock yard was analyzed.The results show that heavy metal background values of As and Ni are high in the study area.Soil quality in the study area is good except that As content is higher than the soil environmental quality risk control standard(GB 15618-2018).The excess of As element is related to the high background value.There is little influence of water flow,wind and other factors on diffusion and transmission of heavy metal in soil surrounding the waste-rock yard.

关 键 词：铜镍矿 砷 土壤背景值 重金属污染 镍 

分 类 号：X825[环境科学与工程—环境工程]