长江三角洲地区土壤重金属污染特征及潜在生态风险评价_以江苏太仓市

:2006-01-06;:2006-08-23:(2002CB410810)(20031230008):(1978-),,,,E2mail:[e-mail]:,E2mail:[e-mail]1,2,1,3(1.,210093;2.,510640;3.,210008):ZnCu,;CdNiHgAsCrPb,CuHgZnAs,As;8As,,,;,,HgCd,AsCuZnCrNiPb:;;;:X53:A:1000-0690(2007)03-0395-06[1][2,3],,[410],[11],,,(),2004542.6,49%,1906.32104t,215.58109m3,234.48t,2.9104t[12],[1315],,,,,,,,,11.11)GPS,()5(,,,),50m,273200706SCIENTIAGEOGRAPHICASINICAVol.27No.3June,20075020cm,54,2697,75,4(1)1Fig.1DistributionofsamplingsitesofsoilheavymetalsinTaicangCity2)pH,2,(HF-HNO3-HClO4),(ICP),,[16]3)1.2Hankan2son,,,,,:Cif=Ci/Cin;Eir=TirCif;RI=6ni=1Eir,Cif;Ci;Cin,[17]Tir,,Hankanson,Hg=40,Cd=30,As=10,Cu,Pb,Ni=5,Cr=2,Zn=1[18]Eir,RI,[1921],EirRI(1)1EirRITable1GradestandardofEirandRIEri30306060120120240240RI11011022022044044022.11)(HJ/T166-2004),95%,20%,[22](2),Zn,41;CuPb,3621;20,54,2Table2ThedescriptivestatisticsofsoilheavymetalconcentrationsinTaicangcity(mg/kg)(mg/kg)(mg/kg)(%)pH7.77.34.368.310.750.11-Cd0.1160.110.050.170.030.27850Cr65.7263.6127.84104.8220.050.321142.9Cu22.7832.37339.1391.1919.580.603664.81Ni29.1229.9513.7644.697.470.25757.41Hg0.1630.21330.140.370.050.24687.04Pb20.3917.9834.2346.658.140.452131.48Zn73.0292.01333.46362.6358.990.644159.26As8.8012.84337.1920.702.860.22598.15333:(p0.05p0.01)693272,ZnCu,0.60,,ZnCu,,;CdNiHgAs,0.25,,4,,2,CuHgZnAs,CuAs,1.421.46,Pb,CuZn45,PbCr,50%,HgAs87.0%98%,92.6%,74.1%,64.8%4,57.4%5,50%6,33.3%7,16.7%8,(3),CdCrCuNiPbZn,6[23]HgAs6,HgAs,HgAs38Table3Thecorrelationcoefficientsofthe8kindsofsoilheavymetalsCdCrCuNiHgPbZnAsCd1.000.77330.39330.97330.170.51330.45330.01Cr-1.000.3430.77330.070.58330.5833-0.00Cu--1.000.39330.080.55330.36330.13Ni---1.000.140.49330.43330.06Hg----1.000.3733-0.02-0.24Pb-----1.000.46330.05Zn------1.00-0.06As-------1.003,33P0.05P0.012)CuHgZnAs(4),,NiAsCuNi,CrNiZn,AsCu,Hg,,CuNi()[24]CrNiZn,,6[25],,;[26],,,,,,,,3)7933:,,.,1986.4(mg/kg)Table4Soilheavymetalsconcentrationsindifferentfunctionareas(mg/kg)CdCrCuNiHgPbZnAs0.10a58.1a327.28a27.27a0.22a16.07a84.58a12.03a0.13a67.14a43.60a35.77b0.21a20.61a101.47a13.01ab0.13a77.40a35.60a33.33ab0.20a22.33a130.51a13.47ab0.12a62.95a37.53a30.11ab0.20a16.88a83.04a15.19b0.10a67.57a26.87a28.42ab0.21a18.64a72.34a12.56ab3p0.05,64.8%20.77%5,CuNiHgZnAs,CrCuPbZn,,,CuPbZn,,,,;(),,,,,,,5(mg/kg)Table5Soilheavymetalsconcentrationsindifferentsoiltypes(mg/kg)(n=45)(mg/kg)(%)(n=9)(mg/kg)(%)Cd0.11a44.440.12a55.56Cr61.44a40.0074.50a55.56Cu29.47b60.0046.83a88.89Ni29.94a55.5629.96a55.56Hg0.21a84.440.23a100.00Pb16.04b20.0027.69a88.89Zn84.44b53.33129.91a88.89As12.85a97.7812.77a100.00p0.054),,,[27]6,,HgPbZn8As,,,CuHgPb020cm40cm,CuHgPb,Cu,,,,[28]As,,[28],2.27,Hg,,Cd,,,,,,,,HgCd,AsCu,,,,HgCd,31),893276(mg/kg)Table6Distributionofheavymetalsinsoilprofiles(mg/kg)CdCrCuNiHgPbZnAs020cm0.083a46.74a36.38a22.54a0.22a26.68a77.05a6.97a2040cm0.076a46.20a34.63ab21.97a0.12ab19.17ab55.92a7.49a40cm0.070a41.60a30.63b19.92a0.04b16.18b48.16a8.53ap0.057Table7PotentialecologicalriskassessmentresultsofsoilheavymetalsinTaicangCityEirCdCrCuNiHgPbZnAsRI26.381.775.994.6853.533.941.1613.67111.1232.812.049.576.1450.635.061.3914.78122.4231.832.367.815.7248.525.481.7915.30118.8030.501.928.245.1750.384.141.1417.27118.7426.572.065.904.8850.904.570.9914.27110.1328.371.876.475.1450.583.931.1614.60112.1230.402.2710.285.1457.596.791.7814.51128.7528.711.947.105.1451.754.411.2614.59114.90CuNiHgZnAs,As,1.46,98%,2)NiAs,CuNi,CrNiZn,AsCu,Hg,3)CuPbZn,8As,4),,,,HgCd5),pH200.4(2),pH[29],,,,::[1],,,.()[J].,2005,25(1):6873.[2],,.[J].,2005,25(3):74280.[3],,,.[J].,2003,23(1):7781.[4].:[Z].,2005-07-04.2123.[5].[J].,2001,(3):113118.[6],,,.[J].,2002,22(4):508512.[7],,,.[J].,2006,26(1):3339.[8],,,.[J].,2007,27(2):237242.[9],,.[J].,2007,27(2):15622.[10],,.137Cs[J].,2007,27(2):261267.[11],,.[J].,2004,24(4):419425.[12].[M].:,2004.9933:[13],,.[J].,2005,25(3):329334.[14],,,.[J].,2005,25(1):108112.[15]LoskaK,WiechulaD,KorusI.Metalcontaminationoffarmingsoilsaffectedbyindustry[J].EnvironmentInternational,2004,30:159-165.[16].[M].:,2000.[17],,().[M].:,1987.[18]LarsHankanson.AnecologicalriskindexforaquaticpollutioncontrolAsedimentologicalapproach[J].WaterReasearch,1980,14(1):975.[19],,.[J].,2006,25(6):16161619.[20],,.[J].,2005,25(4):6972.[21],,,.()[J].(),2002,28(6):669774.[22].HJ/T166-2004[M].:,2004.[23],,,.[J].(),2004,43(4):9094.[24],,,.[J].,2004,14(4):2527.[25],.[J].,2004,17(3):3840.[26],.[J].,2005,29(2):3940.[27],,,.-[M].:,1996.168193.[28]().[M].:,1995.105135.[29],,,.:[J].,2004,23(11):10881093.SpatialCharacteristicsandPotentialEcologicalRiskofSoilHeavyMetalsContaminationintheYangtzeRiverDeltaACaseStudyofTaicangCity,JiangsuProvinceZHONGXiao2Lan1,2,ZHOUSheng2Lu1,ZHAOQi2Guo3(1.SchoolofGeographicandQceangraphicSciences,NanjingUniversity,Nanjing,Jiangsu210093;2.CollegeofInformaties,SouthChinaAgriculturalUniversity,Guangzhou,Guangdong510642;3.InstituteofSoilScience,ChineseAcademyofSciences,Nanjing,Jiangsu210008)Abstract:Inthispaper,soilcontaminationcharacteristicsof8heavymetals(Cd,Cr,Cu,Ni,Hg,Pb,ZnandAs)inthetopsoil(0-20cm)fromTaicangCity,atypicalregionoftheYangtzeRiv