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时间:2020-05-20
《重庆某废弃电镀工业园农田土壤重金属污染调查与生态风险评价-论文.pdf》由会员上传分享,免费在线阅读,更多相关内容在行业资料-天天文库。
1、第33卷第3期环境化学Vol_33.No.32014笠3月ENVIRONMENTALCHEMISTRYMarch2014DOI:10.75~/j.issn.0254-6108.2014.03.014重庆某废弃电镀工业园农田土壤重金属污染调查与生态风险评价韩君,徐应明温兆飞吴胜军徐愿坚(1.中国科学院重庆绿色智能技术研究院,三峡生态环境研究所,中国科学院水库水环境重点实验室,重庆,400714;2.农业部环境保护科研监测所,天津,300191)摘要以重庆市某废弃电镀工业园周边农田土壤(0—20am)为研究对象,分析了土壤中cr、Ni、cu、zn及cd含量,评估了农田土壤重金属污染程度
2、以及潜在生态风险.结果表明,废弃电镀工业园周边农田土壤均受到了不同程度的重金属污染,其中cr、Ni、cu、zn、Cd的含量平均值分别为重庆土壤环境背景值的6.77、2.02、4.05、4.29、3.14倍,土壤总体表现为以Cr、zn为主的多种重金属富集.单因子污染指数评价显示,该区域农田土壤5种重金属的污染程度依次为Cr>Zn>Cu>Cd>Ni:综合污染指数评价和综合潜在生态风险评价表明,该区域整体呈现重度污染.轻度潜在生态风险水平.关键词农田土壤,重金属,污染程度,潜在生态风险,重庆.Investigationandecologicalriskassessmentofheavym
3、etalpollutioninagriculturesoilofanabandonedelectroplatingindustrialparkofChongqing,ChinaHANJun-XUYingmingWENZhaofeiWUShengjunXUYuanjian(1.KeyLaboratoryofReservoirAquaticEnvironment.DivisionofEcological&EnvironmentalResearchontheThreeGorges,ChongqingInstituteofGreenandIntelligentTechnology,Chin
4、eseAcademyofSciences,Chongqing,400714,China;2.Agro-EnvironmentalProtectionInstitute,MinistryofA鲥culture,Tianjin,300191,China)Abstract:TheconcentrationsofCr,Ni,Cu,ZnandCdinthetopsoil(0—20am)ofanagriculturefieldnearanabandonedelectroplatingindustrialparklocatedinChongqingwereanalyzedbyfieldsampl
5、ingandlaboratoryanalysis,aimingtoevaluatetheseverityofheavymetalpollutionandpotentialecologicalrisksofthecontaminatedsoil.TheaverageconcentrationofCr,Ni,Cu,ZnandCdinthecollectedsampleswere6.77,2.02,4.05,4.29,and3.14timesasmuchasthatofsoilheavymetalbackgroundconcentrationinChongqing,respectivel
6、y.AnditwasobservedthatmuhipleheavymetalcontaminationmainlyduetoCrandZn.ThesinglefactorpollutionindexassessmentshowedthattheseverityofheavymetalpollutionfollowedtheorderofCr>Zn>Cu>Cd>Niinthefieldsoil.Integratedfactorpollutionindexshowedthattheinvestigatedareawasseriouslypollutedbyheavymetals,an
7、dtheintegratedpotentialecologicalriskindexshowedthatthepotentialecologicalrisklevelfortheareawaslow.Keywords:agriculturesoil,heavymetals,pollutiondegree,potentialecologicalrisk,Chongqing.土壤是人类赖以生存的物质基础,土壤重金属污染不仅会严重影响和改变土壤生态功能.而且会危害农产品品质
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