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Choi, Sung-Deuk
Environmental Analytical Chemistry Lab (EACL)
Research Interests
  • Persistent organic pollutants, Environmental Analysis and monitoring, Multimedia modeling, Fine particle

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Monitoring of polycyclic aromatic hydrocarbons using passive air samplers in Seoul, South Korea: Spatial distribution, seasonal variation, and source identification

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dc.contributor.author Phan Quang Thang ko
dc.contributor.author Kim, Seong-Joon ko
dc.contributor.author Lee, Sang-Jin ko
dc.contributor.author Kim, Chang Hyeok ko
dc.contributor.author Lim, Hyung-Jin ko
dc.contributor.author Lee, Seung-Bok ko
dc.contributor.author Kim, Jin Young ko
dc.contributor.author Quang Tran Vuong ko
dc.contributor.author Choi, Sung-Deuk ko
dc.date.available 2020-05-29T00:39:40Z -
dc.date.created 2020-05-25 ko
dc.date.issued 2020-05 ko
dc.identifier.citation ATMOSPHERIC ENVIRONMENT, v.229, pp.117460 ko
dc.identifier.issn 1352-2310 ko
dc.identifier.uri https://scholarworks.unist.ac.kr/handle/201301/32198 -
dc.description.abstract Seoul, the capital of South Korea, is one of the largest megacities in northeast Asia. Previous studies have monitored atmospheric polycyclic aromatic hydrocarbons (PAHs) in Seoul, but few have produced highly spatially resolved data. In this study, a total of 144 polyurethane foam-passive air samplers (PUF-PASs) were deployed at 36 sites (4 mad, 26 urban, and 6 background sites) in Seoul during the summer of 2016 and the winter of 2017. The concentrations of Sigma(13) PAHs fell within a range of 2.6-49.9 ng/m(3) in summer and 15.5-77.8 ng/m(3) in winter. Low-molecular-weight PAHs with 3-4 rings were dominant (accounting for about 97% of all PAHs) at all sampling sites in both seasons compared to high-molecular-weight PAHs with 5-6 rings. Phenanthrene was the most abundant individual compound, accounting for 35-54% and 42-52% of the total PAHs in summer and winter, respectively. The spatial distribution of PAHs was determined by traffic, domestic heating, topography, transport, and meteorological conditions. The concentration of PAHs at the road sites was higher than at the urban and background sites, indicating that vehicular exhaust was a major source in both seasons. In addition, diagnostic ratios and principal component analysis revealed the influence of various sources, such as gasoline and diesel emissions and coal and biomass combustion. Backward air trajectory analysis highlighted the influence of long-range transport from northern China and North Korea during the winter, whereas the influence of local emissions and satellite cities appeared to dominate during the summer. In conclusion, passive air sampling was successfully employed to identify major sources of PAHs in an Asian megacity, indicating that it could produce data with a high spatial resolution for use in human risk assessment and air monitoring networks. ko
dc.language 영어 ko
dc.publisher PERGAMON-ELSEVIER SCIENCE LTD ko
dc.title Monitoring of polycyclic aromatic hydrocarbons using passive air samplers in Seoul, South Korea: Spatial distribution, seasonal variation, and source identification ko
dc.type ARTICLE ko
dc.identifier.scopusid 2-s2.0-85082858060 ko
dc.identifier.wosid 000530031600015 ko
dc.type.rims ART ko
dc.identifier.doi 10.1016/j.atmosenv.2020.117460 ko
dc.identifier.url https://www.sciencedirect.com/science/article/pii/S1352231020301977?via%3Dihub ko
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