电子垃圾拆解区不同深度土壤重金属污染特征李科

38《》[e-mail]。、、、、、、、、、、[1]。。[2]。[3-6]。[7]EnvironmentalScience&Technology38620156Vol.38No.6Jun.2015100048ABCCr、Ni、Cu、Zn、As、Cd、Pb。BA0~5cm。。。X825Adoi10.3969/j.issn.1003-6504.2015.06.0341003-6504(2015)06-0204-06PollutionCharacteristicsofHeavyMetalsinDifferentDepthsSoilfromTypicalE-wasteDismantlingRegionLIKeDINGQingqingMENGLinaTIANYuanDepartmentofEnvironmentalScienceandEngineeringBeijingTechnologyandBusinessUniversityBeijing100048ChinaAbstractThesoilsectionsamplesarecollectedfromsiteABandCfromthetypicalE-wastedismantlingregionofWenlingTaizhouinZhejiangProvincetodeterminetheconcentrationassessthecontaminationstatusexplorethepollutioncharacteristicsandsourceofCrNiCuZnAsCdandPbindifferentdepthssoil.SiteABandCaretheareaswheretheE-wastedismantlinghasworkedforashortertimelongertimeandneverrespectively.ResultsshowthattheconcentrationofheavymetalsindifferentdepthssoilinE-wastedismantlingsitesarehigherthanthatincontrolsiteCwhilesoilcoreBismoreseriouslypollutedthansoilcoreAwithsomeheavymetalsintopside0~5cminmoderateorhighpollutiondegree.ThesourceofheavymetalsisE-wastedismantlingwhilethecontaminationstatusisassociatedwiththehistoryofE-wastedismantlingworkandaredistinctindifferentdepthssoil.Theverticaldistributionsofheavymetalsinsoilarebasicallythesamewiththeconcentrationsdecreasedwiththesoildepthincreasedandthetopsideasthemostcontaminativedepth.KeywordsE-wastedismantlingregionheavymetalssoildifferentdepths6。[8-9]。。HMQ7Cr、Ni、Cu、Zn、As、Cd、Pb。11.1。3AHMQBHMQC。330cm。5cm60~5cm、5~10cm、10~15cm、15~20cm、20~25cm、25~30cm18。、100。1.27、、、、、、1000μg/mL50mL、、、。ICP-MSELAN9000。1.30.2g0.0002g---HJ491-2009[10]。0.45μm350mL。3。。7Cr、Ni、Cu、Zn、As、Cd、PbICP-MS。GBW074027。75%。。1.4GB15612-1995pH＜6.5[11]7[12-13]。Pi=Ci/Si1P=P2imax+P2iave2姨21、2PiCiSiPPiavePimax。、、、、。[14]。1.5SPSS13.0Pearson。22.12ABC71。AB7Ni40mg/kg38.3mg/kgNi。620~5cm638ACu、Zn、As、PbBCu、As、Pb、Zn、CdAAsBCu、As、Pb、Zn、Cd。Cu、As、Pb、Zn、Cd。CCr、Ni、Cu、CdCr、Ni、Cu、Cd。Zn0~5cm、5~10cm10~15cmZn。AsAs。PbPb。ABCNiAsAs。5Cr、Cu、Pb、Zn、Cd。ABBAAB。1Table1Contentsofheavymetalsindifferentdepthsofsoilfrom3samplesitesmg/kgCrNiCuZnAsCdPbA0~5cm99.2319.0562.29175.3347.490.21429.225~10cm93.5912.799.50140.8745.260.19316.9110~15cm92.8423.239.59134.9652.710.15288.0515~20cm80.6620.0011.20128.5948.360.05230.1620~25cm80.2620.728.69100.4252.520.05146.0625~30cm78.3218.697.5184.3743.980.02141.21B0~5cm104.2613.55481.06505.2349.061.50788.085~10cm68.385.03162.65186.8951.190.30738.7310~15cm61.914.1135.89137.4938.160.08602.3815~20cm57.004.0012.51118.1936.530.07453.2620~25cm45.021.978.24108.4134.440.05236.0025~30cm42.401.367.5091.0329.260.02123.29C0~5cm76.3615.1520.00185.5748.26nd304.165~10cm67.1913.2318.59145.8245.59nd228.3410~15cm63.0616.8218.19108.9245.48nd209.5715~20cm43.513.2617.56103.0335.15nd200.3720~25cm40.8914.7219.49100.2632.26nd201.2425~30cm35.9115.6216.9195.3831.29nd178.39[14]89.138.333.81067.980.15934.2[11]2504050200300.3250[11]400200400500301.05002.2ABC72。CCr、Ni、Cu、ZnCd15。AsPAs1.04~1.61。Pb0~5cm5cm。7P0.80~1.240~5cm、5~10cm、10~15cm15cm。AsAs6。As6P(6)0.53~0.946。ACr、Ni、ZnCd14。Cu0~5cm5cm。PbPPb0.56~1.720~5cm、5~10cm、10~15cm15cm。As。7。B7。Cr、Ni12。Cu0~5cm、5~10cm10cmZn0~5cm5cmCd0~5cm5~10cm10cmPb0~5cm5~10cm、10~15cm15~20cm20cm。AsCA。2.3[15]。33~5。ACrZn、Cd、PbZnCd、PbCdPbCr、Zn、Cd、Pb。BCrNi、Cu、Zn、Cd、PbNiCu、Zn、CdCuZn、CdZnCdAsPb7B。CCrZn、As、PbZnPbCr、Zn、As、Pb。2Table2Singlefactorandcomprehensivepollutionindicesofheavymetalsindifferentdepthsofsoilfrom3samplesitesPCrPNiPCuPZnPAsPCdPPbPA0~5cm0.400.481.250.881.580.701.721.405~10cm0.370.320.190.701.510.631.271.1810~15cm0.370.580.190.671.760.501.151.3515~20cm0.320.500.220.641.610.170.921.2220~25cm0.320.520.170.501.750.170.581.3025~30cm0.310.470.150.421.470.070.561.09B0~5cm0.420.349.622.531.645.003.157.185~10cm0.270.133.250.931.711.002.952.5210~15cm0.250.100.720.691.270.272.411.8015~20cm0.230.100.250.591.220.231.811.3620~25cm0.180.050.160.541.150.170.940.8725~30cm0.170.030.150.460.980.070.490.73C0~5cm0.310.380.400.931.6101.221.245~10cm0.270.330.370.731.5200.911.1510~15cm0.250.420.360.541.5200.841.1515~20cm0.170.330.350.521.1700.800.8920~25cm0.160.450.390.501.0800.800.8425~30cm0.140.370.340.481.0400.710.80*0.05**0.01。3A7Table3PearsoncorrelationcoefficientforheavymetalsinsamplesiteACrNiCuZnAsCdPbCr1.000-0.2030.6640.901*0.0270.988**0.950**Ni1.000-0.001-0.1460.731-0.323-0.217Cu1.0000.762-0.1060.6020.778Zn1.0000.0440.888*0.979**As1.000-0.011-0.078Cd1.0000.933**Pb1.000382.4A、B、CANi、Cu、AsBAsCNiCu0~5cm。Ni3。As3AsABCAsAs。Cu3。A、B、C3B。BB。B71。1Cr、Ni、Cu、Zn、Cd0~5cm5~10cm34.41%、62.89%、66.19%、63.01%80.00%。Cu、Zn、Cd5~10cm10~15cm0~5cm5~10cmCrNi15~20cm20~25cm0~5cm5~10cm。Pb5Pb0~5cm5~10cm。As0~5cm5~10cm。NiCrCu、Zn、Cd、As、Pb。5~10cmCr10~15cm、15~20cmCdCu20~30cmZnAs4B7Table4PearsoncorrelationcoefficientforheavymetalsinsamplesiteBCrNiCuZnAsCdPbCr1.0000.989**0.960**0.962**0.8080.945**0.855*Ni1.0000.971**0.986**0.7330.976**0.773Cu1.0000.990**0.7580.988**0.721Zn1.0000.6940.998**0.693As1.0000.6650.929**Cd1.0000.650Pb1.000*0.05**0.01。5C7Table5Pearsoncorrelationcoefficientforheavymet