大庆市建成区土壤重金属潜在生态危害和健康风险评价

:2010-06-04;:2010-11-23:(1212010511217-03):(1957-),,,,E2mail:[e-mail].(1250000),2005.,,,,(,130012):,,308,Hakanson,,,(Hg)(Cd),11.9%,,,,:;;;;:X820.4:A:1000-0690(2011)01-0117-06,,,,,[1,2],,[3],4440N4600N,12335E12548E,,,,22161km2,262.2[4]4,3076km2,132,;,,;,4,40%;,38[5],,,,,[6],,[7],,11.1(125),,3081km1km,1/km2,308(1),020cm1kg,200,100g200941.2,311201101SCIENTIAGEOGRAPHICASINICAVol.31No.1Jan.,2011,(1:25),2005.,(),2005.1Fig.1DistributionofsamplingsitesinDaqingCity(125)(),AsHgCdPbZnCuNiCr8:,5%,,,(),5%RE,85%1.3,,,,(1),AsCr,30%1,Hg(87.5%),Cd(68.6%),HgCd,,,HgCd1Table1ContentsofheavymetalsinurbansoilsofDaqingCityAsHgCdCrNiCuPbZn(mg/kg)11.91.6000.66566.727.562.3291.3145.2(mg/kg)4.00.0130.04716.17.84.814.826.5(mg/kg)7.10.0560.12338.116.318.323.950.9(mg/kg)7.30.0370.08658.622.820.024.270.7(%)21.387.568.626.230.550.943.840.0:n=308[8],,7,2,8%11%HgCd,,811312Table2GeoaccumulationIndexofheavymetalsinurbansurfacesoilsofDaqingCity()AsHgCdCrNiCuPbZn3002512223043082882862968305440202212019240000004800000040000000000000000000000:n=30822.12.1.1Hakanson[9](RI),(Eri),RIEri,33Table3ClassificationofpollutionpotentialecologicalriskRI›150Eri›40150RI›30040Eri›80300RI›60080Eri›160RI600160Eri›320Eri320:Cif=Ci/Cin(1)Eir=TirCi/Cin(2)RI=6ni=1Eir=6ni=1(TirCi/Cin)(3)(1),(2),(3),Cfii;Cii;Cni,,[10];Tri,HaKanson[11],,HgCd79.429.12.1.2(3),(2)RI15086%,;11%;1%RI600,,2(RI)Fig.2TotalpotentialriskindexofsurfacesoilsinDaqingCity(RI)(2),Hg,11.90%(3)Hg[12](4),,,,,,,4,8.33%Cd/(3),(4),9111:Cd,,Cd27.38%,,,,,,,,,203Fig.3EcologicalrisklevelofsingleheavymetalinsurfacesoilsofDaqingCity4HgCdFig.4DistributionofHgandCdecologicalriskinsurfacesoilsofDaqingCity02131[13],,HgCd2.22.2.13:2;;,,[14]2EDI(70),[mg/(kgd)],(4)(5)EDI=CSIRCFEFEDBWAT(4)EDI=CSCFSAAFABSEFEDBWAT(5)(4)(5),CS(mg/kg);CF;IR;EF;ED;SA;AF;ABS;BW;AT44Table4ParametersofexposureassessmentmodelsIR(mg/d)100-CF(kg/mg)10-610-6AF[mg/(cm2d)]-1EF(d/a)350350ED(a)3030BW(kg)6060AT(d)3653036530AT(d)3657036570SA(cm2/d)-5000ABS-0.001:[141516],EPA[15],(RISK)10-6()AsCd;(HQ,Haz2ardQuotient),HQ1,,HQ1,HgPb(6)(7)RISK=EDISF(6)HQ=EDI/RFD(7)(6),(7),SF();RFD55SFRFDTable5ValuesofSFandRFDofmodelparametersSF[mg/(kgd)]RFDmg/(kgd)Cd6.16.1--Hg--0.00030.0003:[16]2.2.2Cd,2.7810-6,1.9610-7,5.1310-7;,1.3910-7,9.8210-9,2.5710-810-6,CdHg,0.02,6.7210-5,0.3010-4;,0.4310-4,3.5810-6,1.4810-51,,Hg3,308,8HgCd,Hg,Cd,1211:,HgCd,,,HgCd,,,,,,:[1],,,.[J].,2002,14(5):2728.[2]ShomarBH,MllerG,YahyaA.GeochemicalfeaturesoftopsoilsintheGazaStrip:Naturaloccurrenceandanthropogenicinputs[J].EnvironmentalResearch,2005,(98):372-382.[3],,,.[J].,2005,25(1):108112.[4][J].,2006,26(4):420425.[5].[M].:,19842002.[6],.[J].,2005,15(1):3233.[7],,.[J].,2003,11(2):143151.[8]MullerG.IndexofgeoaccumulationinsedimentsoftheRhineRiver[J].Geojournal,1979,2:108-118.[9]HakansonL.Anecologicalriskindexforaquaticpollutioncon2trolasedimenttologicalapproach[J].WaterResearch,1980,14(8):975-1001.[10],,,.[M].:,1989.[11]USEnvironmentalProtectionAgency.ExposureFactorsHand2book[S].EPA/600/P-95/002.1997:104-126.[12].[M].:.1999.[13],.[J].,2001,20(1):4347.[14]USEnvironmentalProtectionAgency.RiskAssessmentGuidanceforSuperfundVolumeIHumanHealthEvaluationManual(PartA)[S].EPA/540/1-89/002,1989:35-52.[15]USEnvironmentalProtectionAgency.SuperfundPublicHealthEvaluationManual[S].EPA/540/1-86/060,1986:1-52.[16]USEnvironmentalProtectionAgency.SupplementalGuidanceforDevelopingSoilScreeningLevelsforSuperfundSites[M].WashingtonDC:WashingtonOfficeofSolidWasteandEmergen2cyResponse,USEnvironmentalProtectionAgency,2001:4-24.AssessmentonPotentialEcologicalHazardandHumanHealthRiskofHeavyMetalsinUrbanSoilsofDaqingCityTANGJie,CHENChu2yu,LIHai2yi,ZHANGTian2qin,XIAORui(CollegeofEnvironmentalandResourcesSciences,JilinUniversity,Changchun,Jilin130012,China)Abstract:Basedonurbanfunctionzonedivisions,308surfacesampleswerecollectedfromtheurbansoilsofDaqingCity,HeilongjiangProvince,China,anddeterminedinlaboratory.ThepotentialecologicalhazardofheavymetalsinthesurfacesoilswereassessedbyusingHakansonspotentialriskindex.Theresultsshowthatthedegreesofheavymetalspollutionwerelowerinthesurfacesoilsofthestudyarea,withlowerpotentialeco2logicalrisk.Asforthemainhazardelements,Hghashigherecologicalrisk,ofwhich11.9%samplesareabovetheheavyrisklevel;Cdhaslowerecologicalrisk,however,sampleswithmiddlerisklevelarewidelydistribu2ted.Inaddition,theassessmentresultsofhumanhealthriskshowthatthecancerandnon2cancerhazardindexesofCdandHgarebothbelowthethresholdvalues,indicatingthattheeffectsofCdandHgpollutiononhumanhealtharelightintheurbanareaofDaqingCity.Keywords:urbansoil;heavymetal;potentialecologicalriskindex;humanhealthyrisk;DaqingCity22131