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1、B4Mbp戶保职与刷用i*.42016ip8ilCONSERVATIONANDUTILIZATIONOFMINERALRESOURCESAug,2016矿山环境南京某铁矿区矿业活动对土壤重金属的累积效应毛香菊1,2邹安华3,马亚梦1,2,肖芳1,2,冯安生1,2,孙体昌3(1.中国地质科学院郑州矿产综合利用研究所,河南郑州450006;2.国土资源部多金属矿评价与综合利用重点实验室,河南郑州450006;3.北京科技大学,北京100083)摘要:人类活动会导致土壤重金属的累积,其中矿业活动是土壤重金属累积的重要原因。采集南京某铁矿区矿业活动区、矿业活动影响区和未受矿业活动影响
2、的对照区表层土壤,测试其中的重金属Cd、Cr、Cu、AS、Hg、Ni和Pb含量,分析7种重金属之间的相关性,分别以对照区表层土壤重金属总量、对照区土壤似背景值评价矿业活动对活动区和影响区土壤重金属的累积贡献量和贡献率。结果发现,矿业活动对活动区重金属累计贡献率顺序为Cd>Pb>Cu>As>Cr>Ni>Hg,对影响区重金属累计贡献率依次为Cr>Hg>As>Cd>Pb>Cu>Ni。矿业活动区Pb和Cd表现为极高累积和极高风险,应引起足够的重视,加大相关治理力度。关键词:铁矿区;矿业活动;土壤;重金属累积中图分类号:X53文献标志码:B文章编号:1001-0076(2016)04-0
3、050-06D01:10.13779/j.cnki.issnlOOl-0076.2016.04.011TheCumulativeEffectsofMiningActivitiesontheHeavyMetalsinSoilsofanIronMineinNanjingMAOXiangju1,2*,ZOUAnhua3,MAYameng1,2,XIAOFang1,2,FENGAnsheng1,2,SUNTichang3(1.ZhengzhouInstituteofMultipurposeUtilizationofMineralResources,Zhengzhou450006,Chi
4、na;2.KeyLaboratoryofEvaluationandMultipurposeUtilizationofPolymetallicOres,MinistryofLandandResources,Zhengzhou450006,China;3.BeingjingUniversityofScienceandTechnology,Beingjing10083,China)Abstract:Humanactivitiescouldleadtoheavymetalsaccumulationinsoil,andminingactivityisoneoftheimportantfa
5、ctors.Thesurfacesoilsamplesofironminingarea,influencedareaandcomparedareawerecollected,andheavymetals(includingCd,Cr,Cu,As,Hg,NiandPb)contentofthesesoilsamplesweremeasured.Basedontherelationshipsofthesemetalandtheresultsofcomparedarea,theeffectofminingactivitiesonsoilsheavymetalaccumulationq
6、uantityandcontributionratesinminingareaandtheinfluencedareawerecalculated.TheresultsshowedthatthesequencesofheavymetalaccumulationrateswereCd>Pb>Cu>As>Cr>Ni>HginminingareaandCr>Hg>As>Cd>Pb>Cu>Niininfluencedarea.Inparticular,PbandCdwerecharacterizedbyhighaccumulationandhighriskinminingarea,wh
7、ichshouldbepaidenoughattentionandemphaticallycontrolled.Keywords:Ironmine;miningactivities;soil;heavymetalsaccumulation本文所研究的铁矿区位于宁芜铁矿集中开采区,是自前国内特大型黑色冶金矿山,距南京市中心*收稿日期:2016-01-23基金项目:申:国地质M.蠢局地质《查ID作项麗:t12120113006900>;申:菌地质谪蠢局地质'调查项_(12120101700015