湖南市场和污染区稻米中As_Pb_Cd污染及其健康风险评价

3011201011ActaScientiaeCircumstantiaeVol．30No．11Nov．2010No．20477055No．08C432SupportedbytheNationalNaturalScienceFoundationofChinaNo．20477055andtheScientificResearchFundofHunanProvincialEducationDepartmentNo．08C4321975—*[e-mail]1975—malePh．D．*[e-mail]、Pb、CdJ．30112314－2320LeiMZengMWangLHetal．2010．ArsenicleadandcadmiumpollutioninricefromHunanmarketsandcontaminatedareasandtheirhealthriskassessmentJ．ActaScientiaeCircumstantiae30112314－2320As、Pb、Cd1234WilliamsPaulN22*1．4101282．1000853．4100044．2500142010-02-042010-04-262010-06-22As、PbCd．As、PbCd0．20、0．200．28mg·kg－1As、PbCd．As、PbCd＞＞As、PbCd0．24、0．210．65mg·kg－1/As、PbCd．As、PbCd．As、PbCd．As、PbCdCdCd90%AsPb．0253-2468201011-2314-07X820．4AArsenicleadandcadmiumpollutioninricefromHunanmarketsandcontaminatedareasandtheirhealthriskassessmentLEIMing12ZENGMin3WANGLihong4WilliamsPaulN2SUNGuoxin2*1．CollegeofResourcesandEnvironmentHunanAgriculturalUniversityChangsha4101282．ResearchCenterforEco-EnvironmentalSciencesChineseAcademyofSciencesBeijing1000853．CollegeofForestryCentralSouthUniversityofForestryandTechnologyChangsha4100044．ShandongAnalysisandTestCenterJinan250014Received4February2010receivedinrevisedform26April2010accepted22June2010AbstractAmongallriceproducingareasinChinaHunanProvincesouthcentralChinaisthegreatestgrainproductionprovince．BasedonourpreviousstudyofsoilcontaminationtheconcentrationsofAsPbCdinricefromHunanmarketsandcontaminatedareasandthehumanhealthriskassessmentofAsPbCdtoanadultthroughthericeconsumptionpathwayaroundthoseareaswereinvestigated．TheresultsshowedthatthemeanconcentrationsofAsPbandCdinmarketricewere0．200．20and0．28mg·kg－1respectively．InparticularthehighestconcentrationsofAsPbandCdwerefoundinHengyang'smarketricesamplesfollowedbyZhuzhou'sandXiangtan'smarketricesamples．InthecontaminatedricetheaveragecontentsofAsPbandCdwere0．240．21and0．65mg·kg－1respectivelyhigherthanthoseinmarketrice．AmongthecontaminatedricesamplesthehighestconcentrationsofAsPbandCdwerefoundinricefromtheHengyangShuikou－shanPb/ZnmineareafollowedbythezhuzhouQingshui-tangsmeltingandXiangtanmanganesemineareas．AllresultsfrommarketandfieldriceindicatedthatHengyangwastheareamostcontaminatedbyAsPbandCdfollowedbyZhuzhouandXiangtan．Amongthestudiedheavymetalscadmiumisthepredominantriskfactorforanadultexposed11As、Pb、Cdthroughriceconsumptionamountingtoover90%ofthehazardindexvaluesincontaminatedsoilsfromtheZhuzhouandXiangtanimpactedareas．KeywordsriceheavymetalshealthriskassessmentmarketscontaminatedareasHunanProvince1IntroductionOryzasativaL．Stone2008．20061．83×108tFAO2008．2．32×107t12．7%ChinaSTAT2007．“”“”As、Cd、Pb．199220022004．Cd、As、Cr、Pb2．0×106hm21/5Cd1．33×104hm211251.0×107t1.20×107t2002005a．As、PbCdWatanabeetal．1989Patraetal．2004Heikens2006Williamsetal．2007Zengetal．2008．．．Patraetal．2004．2008As、PbCd．．2Materialsandmethods2．12008．80～90℃15～30min65℃96h．、3．1121．0kg．．．2520331351237102．2．2．0．1～0．2g50mL2mLMARS5CEMMicrowaveTechnologyLtd．USA．5min55℃10min5min75℃10min10min95℃30min50mLPE．As、PbCdICP-MS7500aAgilentTechnologiesJapan、、As、PbCd．2．310%12h．、GBW07603GBW10010．As、PbCd96%～513230105%、97%～103%87%～96%．2．4HQUSEPA1989HQ=ADDRfD2ADD=Ci×IR×ED×EFBW×AT×3653ADDmg·kg－1·d－1RfDmg·kg－1·d－1As、PbCd0．003、0．0040．001mg·kg－1·d－1USEPA2000CiAs、PbCdmg·kg－1IR0．389kg·－1·d－12005ED30aUSEPA1997EF350d·a－1USEPA1997BW62．7kg2005AT70a3651365．As、PbCd．HIAs、PbCdPaustenbach2002HI=HQ1+HQ2+…HQn4HI≤1．0HI＞1．0HI＞10．2．5SPSS11．5．3Results3．1As、PbCd1112As、Pb、Cd．1aAs0．07～0．72mg·kg－10．20±0．10mg·kg－147As39%8As0．10mg·kg－17%．1b1cPbCd0．013～2．750mg·kg－10.002～3．710mg·kg－10．20±0.40mg·kg－10．28±0．54mg·kg－123PbCd21%Pb1As、PbCdFig．1ContentsofAsPbandCdinmarketricefromHunanprovince613211As、Pb、CdCd．3．2As、PbCd1、As、PbCd．1As、PbCd0．16～0．29、0．06～0．770．10～1．59mg·kg－1．、As0．24±0．04、0．43±0．082．92±0．84mg·kg－1Pb0．21±0．21、0．80±0．7127．51±23．38mg·kg－1Cd0．66±0．48、0．76±0．561．25±0．99mg·kg－1．As、PbCd、＞＞．As0．29mg·kg－1、0．27mg·kg－1As．、Pb0．77、7．89、97．87mg·kg－1Cd1．59、1．843．34mg·kg－1．Pb0.06mg·kg－1Cd0．10mg·kg－1．1、As、PbCdTable1ContentsofAsPbandCdinwhitericebrownriceandhuskfromcontaminatedareasAs/mg·kg－1Pb/mg·kg－1Cd/mg·kg－10．270．483．910．772．7192．871．591．843．34n=110．230．423．240．782．7797．531．962．273．180．240．432．730．180．6822．091．191．371．67n=70．210．371．990．150．5719．660．690．801．050．170．291．710．170．6625．741．071．232．43n=100．160．291．630．170．6424．861．001．162．280．250．442．920．301．0921．360．720．840．17n=130．240．442．620．331．2045．110．050．060．110．240．432．640．120．4216．910．590．681．34n=70．260．472．520．110．3414．100．560．641．270．240．432．340．130．5120．110．430．491．01n=120．200．351．740．090．3915．940．250．290．510．270．484．050．060．2711．650．370．430．84n=100．220．402．970．050．2410．580．300．350．690．290．513．860．180．7027．030．240．270．84n=60．260．464．140．020．6525．430．030．040．690．270．483．210．110．4417．700．260．300．59n=130．260．512．320．080．3514．450．080．100．190．160．281．800．120．4919．630．100．110．29n=110．150．271．690．100．4317．230．070．080．21CNFSS≤0．7a≤0．2b≤0．2c≤2．0d≤5．0d≤0．5dCNFSSa．GB14810-94b．GB14935-94c．GB15201-94d．GB13078-2001．3．32～4As、PbCdADD、HQ、HI2．2As、PbCdADD10－310－4As、PbCd．AsPbHQ1.0