天津市典型交通微環(huán)境中PM10的吸入因子研究.pdf

1、南開大學(xué)碩士學(xué)位論文天津市典型交通微環(huán)境中PM10的吸入因子研究姓名：許嘉申請學(xué)位級別：碩士專業(yè)：環(huán)境科學(xué)與工程；環(huán)境科學(xué)指導(dǎo)教師：金陶勝201105AbstractAbstractVehicleexhausthasbecameoneofthemainimportantsourceoftheurbanairpollutionsRespirableparticulatematter(PMlo)isoneofthemainpollutant

2、swithcomplicatedcomponentsandmanykindsofhazardmaterials，whichmaycausenegativeeffectonhumanhealthPMlosampleswerecollectedinthetrafficintensiveareasformMarch27toApril3，2010111eportablepersonalsamplershadbeenusedforPMiocoll

3、ectionwitllquartzandteflonfiltersinthreemicroenvironments，includingBalitaibusstop(SA)，Haiguangsibusstop(SB)andtheNo47buswithcirclelines(CBU)，intherushhour(7：00—9：30，4：30—7：00)ofthesamplingdaysPersonalexposuresamplersarea

4、lsocollectedintheinterchangingbusbetweenthebusstopsofBalitaiandHaiguangsi，witllteflonfiltesrusedforPMlocollectionTimeactivitypatternaterecordedintheinvestigationTheteflonfilterswithPMlosamplerswereusedfortheanalysisofmas

5、sconcentrationsandelementthequartzfilterswereusedfortheanalysisofsolubleionandorganic／elementcarbon(OC，EC)CMBreceptormodelhadbeenusedforthesourceapportionmentofPMl0personalexposuresamplers111eresultsshowthatthecontributi

6、onratesofthevehicleexhaustsinthemicroenvironmentsoftwobusstops(SA，SB)andtheNO47bus(CBU)are2298％，3111％and4326％，separatelyForthecalculationofintakefraction(iF)，theintakeofPMIofromthebusexhaustscallbeworkedoutwiththeconcent

7、rationofPMloexposureandthecontributionrateofvehicleexhausts111equantityofbusesstoppedatthetwobusstopshadbeenrecordedtocalculatetheemissionsofbusespassingthroughwiththeemissionfactorsofdifferentdrivingcircles111eintakefra

8、ctionsofeverymicroenvironmentaretherateofspecificintaketotheemission111eresultsshowthatthemeanconcentrationofPMloatthetwobusstops(SA，SB)andNO47bus(CBU)are27948pg／m3，23467腭／IIl3and22002I_tegm3，respectivelyAndthemeallconce

9、ntrationsofinterchangingbuses(PAandPB)are28104rtegm3and29940雌細3AlmostallofthePMloconcentrationsofthesamplingsitesatehigherthanthePMIoconcentrationofambientairinTianjinTheintakefractioninthepublictransportmicroenvironment