2019년 10월 서산 PM2.5 내 유기성분들의 농도 및 분포 특성: 서울 PM2.5 내 유기성분들과의 특성 비교분석 = Characteristics of Organic Compounds in PM2.5 at Seosan: Comparison of Organic Compounds in PM2.5 at Seoul

다국어 초록 (Multilingual Abstract)

Objectives:In this study, we analyzed 56 individual organic compounds in PM2.5 in Seosan, where the large complex emission sources are closely located, to characterize organic compounds distributions in this site.
Methods:The sampling of PM2.5 in Seoul was also simultaneously carried out to compare the concentrations and distributions of organic compounds in PM2.5 measured in Seosan.
Results and Discussion:The overall concentration of organic compounds (OCs) in Seosan was 383±165ng/m3, which was twice as high as the concentration in Seoul (189±67ng/m3). PAHs and levoglucosan concentrations were higher in Seosan than in Seoul, attributing mostly to emissions from fossil fuel combustion and biomass burning. The ratio of Levoglucosan/Mannosan(Levo/Manno) and Levo/K+plot showed that the type of biomass in the biomass burning at two areas might be different. In addition, the concentrations of 1,3,5-triphenylbenzne and tere-phthalic acid, which are indicators of plastic burning, in Seosan were 2~9 times higher than Seoul, respectively.
Conclusion:It suggests that open burning of solid fuels such as biomass and plastic garbage was a key contributor to rising organic aerosol concentrations in Seosan.

국문 초록 (Abstract)

목적:서산지역의 유기화합물 분포 특성 및 배출원 파악방법:23시간 포집한 필터로부터 PM2.5 내 유기성분을 추출하여 가스 크로마토그래피/질량분석기(GC/MS)를 이용하여 분석해 서산 지역에 PM2.5 내 유기성분들의 농도 및 분포를 서울과 비교하였다.
결과 및 토의:서산의 ∑OCs 총농도는 383±165ng/m3로 서울(189±67ng/m3)의 두 배 수준이었다. 주로 화석연료 연소와 바이오매스 연소로 배출되는 PAHs와 Levoglucosan 농도는 서산이 서울보다 높았다. Levoglucosan/Mannosan (Levo/Manno)의 비율은 두 지역에서 바이오매스 연소 중 바이오매스의 종류가 다를 수 있음을 보여주었다. 서산의 경우 플라스틱 연소 지표인 1,3,5-triphenylbenzne과 tere-phthalic acid의 농도가 각각 서울보다 2~9배 높았다. 혼합 출처 지표(Manno, Levo, K+, Cl-, TriPhe, tere-PhA, ΣPAHs and OC)는 서울보다 서산지역에서 큰 상관관계를 보였다.
결론:바이오매스와 플라스틱 폐기물을 포함한 고체 연료 연소는 서산의 유기 에어로졸 농도를 증가시키는 주요 요인이다.

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