电镀废水污染区大米花生重金属含量及食用风险分析何志坚

　2010529　5JournalofMianyangNormalUniversityMay.2010Vol.29　No.5　:2010-05-24:(07S005);(Mnu-cx09010):(1957-　),,,:。何志坚1,王碧友2,李冯云1,薛　鸿1(1.,　621000;2.,　621000)　:用火焰原子吸收法对某电镀废水污染区大米花生中镉、铅、铜、锌、铁进行了测定,污染区大米中镉、铅、铜、锌、铁分别是背景值的8.338、21.32、7.338、15.47、3.347倍,污染区花生镉、铅、铜、锌、铁分别是背景值的11.09、24.56、8.385、5.971、18.62倍,存在严重的复合污染。大米、花生中对人体危害较大的镉、铅分别是国家食品卫生限值的6.220、13.07、4.092、16.11倍,存在较大的食用安全隐患。短期内应改种富集重金属能力较弱的农作物或经济作物,长期应采取积极措施修复该污染区耕作土壤。:粮食;重金属;健康风险:O657.3　　:A　　:1672-612x(2010)05-0050-04,、、,。,--,---,--。、,、、[1-2]。,。[3-4],,。,、,。,,(Cd)、(Pb)、(Cu)、(Zn)、(Fe),,。1　1.1　TAS-990();、、、、();KJ-B();FW-100();101-2A();AUY120()。、,1.000gL-1、、、、。。1.2　12km[5]。1.3　,,2.7644g,2.8918g,2.7089g,2.6655g,HNO-3HClO4,。1.4　1。DOI:10.16276/j.cnki.cn51-1670/g.2010.05.0071.5　(1mg·mL-1)0.1μg·mL-1、0.3μg·mL-1、0.50μg·mL-1、1.0μg·mL-1、1.5μg·mL-1、2.0μg·mL-1、2.5μg·mL-1、3.5μg·mL-1,3.5μg·mL-1,、、、,,2。1　Tab.1　OperatingconditionofinstrumentnmmAmmmmmL.min-1V325.33.00.26.01500300.0279.52.00.26.01500300.0324.73.00.46.01500300.0213.93.00.46.01500300.0248.34.00.28.01500300.02　Tab.2　regressionequationandCorrelationcoefficient/Ry=0.1345x+.00780.9981y=0.1265x+0.00610.9993y=0.216x+0.00140.9995y=0.3195x+0.00310.9991y=0.0609x+0.06030.99941.6　,、、、、,。3,。3　Tab.3　Recoveryratiooffiveelements/μg/μg/μg/%0.7153100.099.6498.221.986100.0103.6101.20.9768100.0100.499.421.425100.0103.2101.70.8233100.099.2598.422　2.1　()4、5:、、、、8.338、21.32、7.338、15.47、3.347,。(),·51·5:、、、、11.09、24.56、8.385、5.971、18.62。,、、。4　Tab.4　Compareofthecontentofheavymetalsinricewithnationalstandardlimitofheavymetals(W)mg·kg-11.2442.6148.54255.44145.0(F)mg·kg-10.14920.12261.1643.58443.32W/F8.33821.327.33815.473.347(G)mg·kg-1≤0.2≤0.2≤10≤50≤70W/G6.22013.070.85421.1092.0712.2　、[6],《》(GB2715-2005)[7]、《》(GB2762-2005)[8],、、,《》(GB13106-1991)、《》(GB15199-1994)、《》(GB15200-1994),、2008214《》[9],《》。4、5::,(),、6.220、13.07,、4.092、16.11,、、。5　Tab.5　Compareofthecontentofheavymetalsinpeanutswithnationalstandardlimitofheavymetals(W)mg·kg-12.0463.22234.06106.4290.4(F)mg.kg-10.18440.13124.06217.8215.60W/F11.0924.568.3855.97118.62(G)mg.kg-1≤0.5≤0.2≤10≤50≤70W/G4.09216.113.4062.1284.1492.3　2005,200478.18kg[10]。80kg,,[11]。,、6.213.0。、,、,[12-14]。3　,:、、、、,,、,。,、6.213.0,。,,[15],。:[1]　.[M].:,2000.[2]　,,.[J].,2004,24(1):14-17.[3]　.[J].,1997,16(3):197-201.·52·()29[4]　LIAOXY,CHENTB,XIEH,etal.SoilAscontaminationanditsriskassessmentinareasneartheindustrialdistrictsofChenzhouCity,SouthernChina[J].EnvironmentInternational,2005,31:791-798.[5]　,,.()[M].:,2004:233-265.[6]　,,,.[J].,2004,9(6):27-29.[7]　GB2715-2005,《》[S].:,2005.[8]　GB2762-2005,《》[S].:,2005.[9]　.[EB/OL].[10][M].:,2005.[11],.、[J].,2007,16(4):1144-1148.[12],,,.[J].,2006,25(3):751-755.[13],,,.[J].,2006,26(8):1343-1353.[14],,.[J].,2006,26(5):603-608.[15].[J].,2000,18(4):12-15.AnAnalysisoftheContentofHeavyMetalinRiceandPeanutsinAreasPollutedbyElectroplatingWastewaterandtheConsumptionRiskHEZhi-jian1,WANGBi-you2,LIFENG-yun1,XUEHong1(1.SchoolofChemistryandChemicalEngineering,MianyangNormalUniversity,Mianyang,Sichuan　621000;2.FuleMiddleSchool,Mianyang,Sichuan　621000)Abstract:ThecontentofCd,Pd,Cu,ZnandFeinriceandpeanutsproducedinelectroplatingwastewaterpollutedareaaredeterminedbyatomicabsorptionspectrophotometry.ThecontentsofCd,Pd,Cu,ZnandFeinriceproducedinpollutedareaarerespectively8.3,21.3,7.3,15.5,3.3timesofthebackgroundvalues,whilethecontentsofCd,Pd,Cu,ZnandFeinpeanutproducedinthepollutedareaarerespectively11.1,24.6,8.4,6.0and18.6timesofthebackgroundvalues,andthereexistsseriouscompositepollution.ThecontentsofCdandPd,whichcausegreaterharmtopeople,inriceandpeanutsare6.2,13.0,4.1and8.0timesofthenation-alfoodsanitationlimits,whichshowsgreaterfoodsafetyproblems.Theresulthintsthatasashorttermcounter-measure,cropswithweakaccumulationofheavymetalsshouldbereplanted,whileasalong-termmeasure,thepollutedsoilshouldberestored.Keywords:food;heavymetal;healthrisk(40)ResearchonWaterwithIroninNdFeBWastebyCompositeSulfateMethodWEICheng-fu1,DAIQiang1,TANGJie1,2,YANGLi-rong1,LIXiang1,ZHANGLin2(1.ThedepartmentofChemistry,MianYangNormalUniversity,MianYang621000,China;2.ResearchCenterofLaserFusion;CAEP,Mianyang621900;China)Abstract:ThewaterwithironinNdFeBwastewasdeltwithbychemistrymothod.Theironneodymium(Nd)wereconvertedintooxideafterrostingNdFeBwasteadequately.Next,ferroussulfatewasgotbyacidsplit-ting,dissolving,filtrating,crystallizing,recrystallizationandstoving.What'smore,itspurityis81.35%.Thismethodnotonlygetsrareearthoxideandsaltwithiron,butalsodecreasescontaminateandenrichscompositesul-fatemethod.Soitwillbeusedwellinindustry.Keywords:NdFeBwaste;recycling;compositesulfatemethod;ferroussulfate·53·5: