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时间:2020-05-04
《六盘水工业区表层土壤的重金属污染及其潜在生态风险评价-论文.pdf》由会员上传分享,免费在线阅读,更多相关内容在应用文档-天天文库。
1、贵州农业科学2014,42(7):188~192GuizhouAgriculturalSciences[文章编号]1001—3601(2014)07—0415—0188—05六盘水工业区表层土壤的重金属污染及其潜在生态风险评价胡江良,胡恭任,于瑞莲。,温先华,何海星,苏光明(1.六盘水师范学院化学与化学工程系,贵州六盘水553001;2.华侨大学环境科学与工程系,福建厦门361021)[摘要]为探明六盘水市主要工业区表层(0~10cm)土壤的重金属污染状况,采用Muller地累积指数法和潜在生态风险指数法,对其主要工业区的土壤重金属Pb、Cu、Ni、Cr、Co、Zn
2、、Mn、V和Ti的污染状况及潜在生态风险进行了评价。结果表明:重金属Pb、zn、Cu、Mn、V、Cr、Ti、co和Ni平均含量分别为360.4mg/kg、364.9mg/kg、115.7mg/kg、1758mg/kg、302.0mg/kg、207.1mg/kg、10653mg/kg、31.9rag/kg和45.9mg/kg。9种重金属元素含量平均值均高于土壤背景值,为土壤背景值的1.17~10.24倍。9种重金属元素的污染程度依次为Pb>Zn>Cu>Mn>V>Cr>Ti>Co>Ni,Pb为中度一重污染程度,zn和Cu属中度污染强度,Cr、Co、Ti、Mn和V属于轻微
3、污染,Ni属于基本无污染。9种重金属元素的生态危害依次为Pb>Cu>Ni>co>V>Cr>Zn>Mn>Ti,Pb的生态危害最大,生态风险参数值达51.20;各采样点综合污染指数(C)值为12.35~71.88,平均27.96,工业区表层土壤重金属整体上属于重污染。[关键词]工业区;重金属;土壤污染;潜在生态风险;六盘水;贵州[中图分类号]X53[文献标识码]APollutionandPotentialEcologicalRisksAssessmentofHeavyMetalsinSurfaceSoiloftheIndustrialAreasinLiupanshuiC
4、ityHUJiangliang~,HUGongren,YURuilian,WENXianhua,HEHaixing,SUGuangming(1.DepartmentofChemistryandChemicalEngineering,LiupanshuiNormalCollege,Liupanshui,Guizhou553001;2·DepartmentofEnvironmentalScienceandEngineering,HuaqiaoUniversity,Xiamen,Fujian361021,China)Abstract:Inordertoinvestigat
5、econtaminationstatusofheavymetalsinthesurfacesoils(0~10cm)ofthemainindustrialareasinLiupanshuiCity,TheMulleraccumulationindexandpotentia1ecologicalriskindexwereusedtoevaluatepollutionsituationofPb,Cu,Ni,Cr,Co,Zn,Mn,VandTiinthemainindustrialareas.Theresultsshowedthattheaveragecontentsof
6、Pb,Zn,Cu,Mn,V,Cr,Ti,CoandNiwere360.4mg/kg,364.9mg/kg,115.7mg/kg,1758mg/kg,302.0mg/kg,207.1mg/kg,10653rag/kg,31.9mg/kgand45.9mg/kgrespectively.Ninekindsoftheheavymetalcontentsinthesurfacesoilsofthemain?industrialareas?were1.17~10.24timeshigherthanthebackgroundvaluesofsoilsinGuizhou.Thea
7、ssessmentresultsoftheMullergeo—accumulationindexofheavymetaIpollutionindicatedthatthepollutiondegreeofsingleelementshowedtheorderofPb>Zn>Cu>Mn>V>Cr>Ti>Co>Ni.Pbwasmoderate—heavypollution,ZnandCuweremoderatepollutionintensity,Cr,Co,Ti,MnandVwereslightlypolluted,Niwasnotpollutedbasicall
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