南昌市区路面沉积物污染分布及评价

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1、南昌大学硕士学位论文南昌市区路面沉积物污染分布及评价姓名：高莹申请学位级别：硕士专业：环境科学指导教师：樊华20080601ABSTRACTUrbanroadsurfacesedimentiSanimportantcontributortocityenvironmentpollution,aswellasthecarrierofallkindsofenvironmentalpollutionsubstances．Ithastheeffectsofmedia,direction,transmission,initiationinurbanenvironmentald

2、isasters，butthecurrenturbanenvironmentologystudyofurbanenvironmentalsurfacesedimentarelessconcerned，andthestudyrelatedtoitssource，distribution,evaluationandpollutiononhumanhealthrisksfailstocausesufficientattention．Compared、析tlltheurbansoil．theurbansurfacesedimentisanenvironmentalmedi

3、a、Ⅳitllcomplexmaterialcompositionandsource，duetotheimpactsofhumanactivities，suchasautomobiletransportation，industrialproductionandurbanconstructionandSOon，urbanroadsurfacesedimentaccumulatesalargeamountofheavymetalsandpolycycliearomatichydrocarbons，whichisanimportantsourceofurbandustp

4、ollution．Undertheinfluenceoftraffictransportation，industrialproductionandurbanconstruction，urbanroadsedimentaccumulatesalargemassofheavymetalsandPAHsandhasbecomeanimportantsourceofurbanenvironmentaldustpollution．Cr，Cd，Pb，Zn，Hg，Ni，Cu，Fe，MnandPAHscontainedinroadsedimentalongthemajortraf

5、ficroadsaredeterminedandanalyzedandcompared、Ⅳitllrelevantareas．Itisaninitialtrialtostudythe“linearpollution'’inroadsedimentalongthemajortrafficinNanChang．AnalysisofcorrelationandprincipalcomponentsareusedtoexplorethesourcesofheavymetalsandPAHsinstudiedareas．Fromtheprimaryjudgment，Pban

6、dZnaremainlyresultedfromtraffic；Cu,CdandNiaremainlygeneratedfrommechanicalwastage；Crispossiblyformulatedfromtheweatheringofsoil；Hghasalowercontentinroadsedimentalongthemajortrafflc．PAHsispossiblyresultedfrombunkers，fuel，anti-frictionpavementconcrete，offgasofautomobile，pneumatics．Byusi

7、ngthemethodofgeo—accumulationindexandpotentialecologicalriskindextoaccesstheheavymetalpollutioninroadsedimentofNanChang，theresultsshowthatCd、Pb、ZnandCuareallmoderatepollution,Crisatpartialmoderatepollutionlevel，andNiisatslightpollutionlevel．W1lilethepotentialⅡABSTRACTecologicalriskofC

8、dinro