黄河表层沉积物中有机氯农药的相关性分析与风险评价

28220082ActaScientiaeCircumstantiaeVol.28,No.2Feb.,2008:(No.0624440040)SupportedbytheKeyScientificandTechnologicalProjectofHenanProvince(No.0624440040):(1957),,();3(),E2mail:[e-mail]:SUNJianhui(1957),male,professor(Ph.D.);3Correspondingauthor,E2mail:[e-mail],,,.2008.[J].,28(2):342-348SunJH,WangGL,ZhangG,etal.2008.CorrelationanalysisandriskassessmentoforganochlorinepesticidesinsurfacesedimentsfromtheYellowRiver[J].ActaScientiaeCircumstantiae,28(2):342-3481,2,3,2,1,1,21.,5106402.,453007:2006212228:2007205227:2007211220:GC2ECD23,TOC,.:0.3522.92ngg-1,HCHsDDTs,0.0912.88ngg-10.055.03ngg-1.,:.TOCHCHs2,.HCHs,;2,;DDTs,.,.:;;;:025322468(2008)022342207:X592,X820.4:ACorrelationanalysisandriskassessmentoforganochlorinepesticidesinsurfacesedimentsfromtheYellowRiverSUNJianhui1,2,3,WANGGuoliang2,ZHANGGan1,LIJun1,CHAIYan21.StateKeyLaboratoryofOrganicGeochemistry,GuangzhouInstituteofGeochemistry,ChineseAcademyofSciences,Guangzhou5106402.HenanKeyLaboratoryforEnvironmentalPollutionControl,CollegeofChemistryandEnvironmentalSciences,HenanNormalUniversity,Xinxiang453007Received28December2006;receivedinrevisedform27May2007;accepted20November2007Abstract:Organochlorinepesticides(OCPs)intwenty2threesurfacesedimentsamplesfromthemiddleandlowerreachesoftheYellowRiverwereanalyzedbyGC/ECD(Gaschromatographywithelectrochemicaldetection).ThecorrelationsbetweentheconcentrationofOCPs,thegranularityofsediments,andtotalorganiccontent(TOC)arediscussed,andthecorrelationsamongvariouscomponentsoftheOCPswerealsostudied.Thecontaminationlevelandriskwereassessedwithriskevaluationcriterion.TheresultsshowthattherangeoftotalOCPsconcentrationwas0.3522.92ngg-1.TheconcentrationsofHCHsandDDTsweremuchhigherthanothercompoundsandvariedover0.055.03ngg-1and0.0912.88ngg-1,respectively.ThecontaminationlevelofOCPsinsedimentincreasedfromthemiddletothelowerreachesalongtheYellowRiver.ThetotalOCPsinthemaintributariesfollowedthesequence:XinmangRiverJindiRiverSiRiverYiluoRiverQinRiver.StrongcorrelationswerefoundbetweenthetotalOCPsandclayratio,TOC,hexachlorobenzene,HCHs,nonachlor,2endosulfaninsediments,andthecorrelationsplayedanimportantroleindeterminingthelevelofOCPsinthesediment.ThecorrelationsbetweenHCHsandeachofhexachlorobenzene,trans2chlordane,endosulfanpesticideswerestrong,thecorrelationsbetweenchlordaneandeachofnonachlor,endosulfan2sulfatewerealsostrong,thesameasthecorrelationbetweenhexachlorobenzeneand2endosulfan.TheseresultsindicatedthattheOCPspossiblyhavethesameorsimilarsourcesanddistributionmechanisms.©1994-2009ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.:organochlorinepesticides;sediments;correlationanalysis;YellowRiver1(Introduction)(organochlorinepesticides,OCPs)(DDT)(HCH),(Patlak,1996;,2005),12.OCPs,(),OCPs(Bakan,2004;,2004).OCPs,,.,OCPs(TOC).,.,,CODBOD,.,OCPs(Iwataetal.,1994;Jiangetal.,2000;,2005a;2005b),OCPs.(),OCPsTOCOCPs,OCPs,.2(Materialsandmethods)2.1,821,711km.,,.,,100km2.,2050,1983.,3.5%10.8%DDT,,,,,.2.220051123(1).13,82.,3.-20.2.3.30g,,,150mL.2g,.,120mL24h,.,(35)510mL,31015mL,2mL,5mL,0.5mL.112,/1125mL,0.5mL,2mL,0.2mL,(PCNB),.2.4HP6890(GC),63Ni(ECD).HP25MS(50m0.25mm0.25m,AgilentCo.Ltd.),1.0mLmin-1,1.0L,,343©1994-2009ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.(1.;2.;3.;4.;5.;6.;7.;8.;9.;10.;11.;12.;13.;14.;15.;16.;17.;18.;19.;20.;21.;22.;23.)Fig.1SamplingmapofsurfacesedimentsfromtheYellowRiver(1.Fenglingferrybridge2.Sanmenxiareservior3.Mingjinbridge4.WastewaterdischargeofLuoyangpetrochemicalcompany5.Yangvillageditch6.stockadedvillageofGaoya7.Longmenhighroadbridge8.confluenceofYiRiverandLuoRiver9.WastewaterdischargeofShouyangshanpowerplant10.YiluoRiverbeforeconvergingintotheYellowRiver11.YellowRiverI12.YellowRiverII13.YellowRiverIII14.Siriver15.SiriverafterconvergingintotheYellowRiver16.Dongpingbottomland17.QinRiver18.QinriverafterconvergingintotheYellowRiver19.Huayuankou20Kaifengbridge21.DongminghighroadbridgeinPuyang22.JindiRiver23JindiriverafterconvergingintotheYellowRiver)315.::60,2min,:6min-1200,1min-1210,10min-1290,10min.Agilent,6.2,4,5,62(PCB209)76%105%,./(QA/QC)(,1999).TOC(CHNSVarioELIII).3g,10%20mL12h,,3,.80,,1020mg,TOC.Mastersizer2000().,80.2g,0.05molL-1,24h,15min,.3,.0.022000m,2%.2000m,,.3(Results)3.123OCPs,OCPs1.1,OCPs0.3522192ngg-1,3.35ngg-1,HCHsDDTs,0.0912.88ngg-101055.03ngg-1.16(),12().:(16)(22)(14)(10)(17),,OCPs,443©1994-2009ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.()9()OCPs,6.86ngg-14.19ngg-1.OCPs.1OCPsTable1ConcentrationofmainorganochlorinepesticidesinsurfacesedimentsfromtheYellowRiverngg-1HCBTCCCHCHsDDTsTNCN2End2EndEnd+sulOCPs10.030.080.060.090.130.020.01n.d.0.010.02