资源描述：
《74-2008-Yu Song-EP- Comparison of receptor models》由会员上传分享，免费在线阅读，更多相关内容在学术论文-天天文库。
1、Availableonlineatwww.sciencedirect.comEnvironmentalPollution156(2008)174e183www.elsevier.com/locate/envpolComparisonofreceptormodelsforsourceapportionmentofvolatileorganiccompoundsinBeijing,ChinaYuSonga,WeiDaia,MinShaob,*,YingLiub,SihuaLub,ccWilliamKuster,PaulGoldan
2、aDepartmentofEnvironmentalSciences,PekingUniversity,Beijing100871,ChinabStateJointKeyLaboratoryofEnvironmentalSimulationandPollutionControl,PekingUniversity,Beijing100871,ChinacChemicalSciencesDivision,NOAAEarthSystemResearchLaboratory,Boulder,CO80305,USAReceived13J
3、une2007;receivedinrevisedform28September2007;accepted12December2007VOCssourcesweresimilarforthreemodelswithCMBshowingahigherestimateforvehicles.AbstractIdentifyingthesourcesofvolatileorganiccompounds(VOCs)iskeytoreducingground-levelozoneandsecondaryorganicaerosols(S
4、OAs).Severalreceptormodelshavebeendevelopedtoapportionsources,butanintercomparisonofthesemodelshadnotbeenperformedforVOCsinChina.Inthepresentstudy,wecomparedVOCsourcesbasedonchemicalmassbalance(CMB),UNMIX,andpositivematrixfactorization(PMF)models.Gasoline-relatedsou
5、rces,petrochemicalproduction,andliquefiedpetroleumgas(LPG)wereidentifiedbyallthreemodelsasthemajorcontributors,withUNMIXandPMFproducingquitesimilarresults.Thecontributionsofgasoline-relatedsourcesandLPGesti-matedbytheCMBmodelwerehigher,andpetrochemicalemissionswerelow
6、erthanintheUNMIXandPMFresults,possiblybecausetheVOCprofilesusedintheCMBmodelwereforfreshemissionsandtheprofilesextractedfromambientmeasurementsbythetwo-factoranalysismodelswere‘‘aged’’.Ó2007ElsevierLtd.Allrightsreserved.Keywords:VOC;Sourceapportionment;UNMIX;PMF;CMB;B
7、eijing1.Introductionozoneconcentrationscanoccurfrequentlythereduringthesummerandautumn.From1999to2004,thenationalozoneManyambientvolatileorganiccompounds(VOCs)havestandardwasexceededon110,109,77,45,57,and67days,beenfoundtohaveadverseeffectsonpublichealth(1990respect
8、ively(BeijingEnvironmentalProtectionBureau,CleanAirActAmendments,Section112).Chemicalreactions1999e2004).MonitoringdataalsoindicatethatPM1
