충남지역 배출원별 PM_2.5중 이온, 탄소, 원소성분의 특성 연구 = Study on the Characteristics of PM_2.5Components from Emission Sources in Chungcheongnam-do

다국어 초록 (Multilingual Abstract)

WeconductedaprincipalcomponentanalysisofPM_2.5(particleswithadiameter≤2.5μm)atfoursiteslocatedinChungcheongnam-do,aprovinceofSouthKorea,todeterminethelevelofpollutionandcharacteristicsofPM_2.5componentsateachemissionsource.ThefourmonitoringsitesincludedasteelcomplexnearSongsan-myeon(SS)area,apetrochemicalcomplexnearDokgot-ri(DG)area,aresidentialcomplexnearMojong-dong(MJ)area,andavillagenearNaepo(NP)area.Samplescollectedatthesesiteswereanalyzedandtheconcentrationsofmass,ion,carbon,andelementinPM_2.5werecompared.ThemassconcentrationswerefoundtobethehighestinSS,followedbyMJ,DG,andNP.TheconcentrationofdominantionspecieswererecordedinaascendingorderofNO₃^->SO₄²⁺>NH₄⁺inMJandSO₄^2->NO₃^->NH₄⁺inSS,DG,andNP.TheresultsindicatethatMJhadthehighestNOxconcentration,whichisemittedbyautomobiles.Moreover,MJexhibitedthehighestorganiccarbonconcentrationof5.67μg/m³andelementalcarbonconcentrationof0.51μg/m³.TheanalysisoftheelementalcompositionofPM_2.5indicatedasignificantlyhigherconcentrationofFe,Zn,andMninSSandAs,V,andNiinDG.DifferentcomponentanalysisresultsfromeachemissionsourcesuggesttheneedtounderstandthedistributionofpollutantsineachregionwhileestablishingmeasurestoreducePM_2.5levels.