The Characteristics of Element Components in PM 2.5 |
서울과 대전지역 PM 2.5 중 원소성분의 농도 특성 |
성민영1, 박진수1, 김현재1, 전하은2, 홍유덕1, 홍지형1 |
1국립환경과학원 2국립환경과학원 기후대기연구부 |
|
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.
. |
Key Words:
PM 2.5, Element components, ED-XRF, Enrichment factor |
|