서울과 대전지역 PM 2.5 중 원소성분의 농도 특성
The Characteristics of Element Components in PM 2.5
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We collected PM 2.5 samples from sampling sites in Seoul and Daejeon metropolitan cities and analyzed elementalspecies in the samples to investigate the concentration distribution and seasonal characteristics of PM 2.5 . Also, emissions contribution was estimated by comparing composition of soils from Korea and elsewhere. Theaverage mass concentrations of PM 2.5 were 27.3 and 30.0 µg/m3in Seoul and Daejeon, respectively. The elementalcompositions were dominated by K, Ca, Fe. The total element components portion ranged from 4.3%to 7.2% in mass concentration of PM 2.5 . Enrichment factors(EF) for the elemental species were calculated toidentify emission sources of PM 2.5 . The PM 2.5 samples showed high Enrichment factors for V and Cr as wellas Br and Pb. Therefore, it is assumed that exhaust emissions from petroleum-base fuel combustion and oilcombustionsrelated to residental space heating have contributed significantly to PM 2.5 emissions in these cities. .
Abstract
We collected PM 2.5 samples from sampling sites in Seoul and Daejeon metropolitan cities and analyzed elementalspecies in the samples to investigate the concentration distribution and seasonal characteristics of PM 2.5 . Also, emissions contribution was estimated by comparing composition of soils from Korea and elsewhere. Theaverage mass concentrations of PM 2.5 were 27.3 and 30.0 µg/m3in Seoul and Daejeon, respectively. The elementalcompositions were dominated by K, Ca, Fe. The total element components portion ranged from 4.3%to 7.2% in mass concentration of PM 2.5 . Enrichment factors(EF) for the elemental species were calculated toidentify emission sources of PM 2.5 . The PM 2.5 samples showed high Enrichment factors for V and Cr as wellas Br and Pb. Therefore, it is assumed that exhaust emissions from petroleum-base fuel combustion and oilcombustionsrelated to residental space heating have contributed significantly to PM 2.5 emissions in these cities.
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