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Choi, Sung-Deuk
Environmental Analytical Chemistry Lab.
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2021년 서울과 광주 지역 PM1.0과 PM2.5의 화학적 특성 비교 분석 연구

Alternative Title
Comparison of chemical compositions and source apportionment of PM1.0 and PM2.5 in Seoul and Gwangju in 2021
Issued Date
PARTICLE AND AEROSOL RESEARCH, v.19, no.4, pp.129 - 144
The PM1.0 and PM2.5 samples were collected synchronously using a single channel particulate sampler equipped with PM1.0 and PM2.5 cyclones, respectively, and seasonal mass concentration and chemical composition of PM1.0 and PM2.5 were quantified in Seoul and Gwangju in 2021-2022. The mass concentrations of PM1.0 and PM2.5 were 17±11 and 22±14 μg/m3 in Seoul, and 16±9 and 19±12 μg/m3 in Gwangju, respectively. The average ratios of PM1.0/PM2.5 were 83±16% in Seoul and 83±7% in Gwangju. The chemical compositions of PM1.0 and PM2.5 were similar at both sites with OC component being the most dominant, and NO3- increasing from summer to winter, while, the difference of chemical distribution at the two sites was most distinct in the autumn. Gwangju showed a higher proportion of OC and a lower proportion of NO3- compared to Seoul during the autumn. Both sites appear to reflect their urban characteristics, with Gwangju also reflecting the impact of biomass combustion as a part of rural activities.
Keyword (Author)
PM1.0PM2.5chemical compositionSeoulGwangju


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