Source apportionment of VOCs and their impact on air quality and health in the megacity of Seoul
- Authors
- Song, Sang-Keun; Shon, Zang-Ho; Kang, Yoon-Hee; Kim, Ki-Hyun; Han, Seung-Beom; Kang, Minsung; Bang, Jin-Hee; Oh, Inbo
- Issue Date
- Apr-2019
- Publisher
- ELSEVIER SCI LTD
- Keywords
- VOCs; Ozone; PM2.5; Receptor model; CMAQ; BenMAP
- Citation
- ENVIRONMENTAL POLLUTION, v.247, pp.763 - 774
- Indexed
- SCIE
SCOPUS
- Journal Title
- ENVIRONMENTAL POLLUTION
- Volume
- 247
- Start Page
- 763
- End Page
- 774
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/2230
- DOI
- 10.1016/j.envpol.2019.01.102
- ISSN
- 0269-7491
- Abstract
- The source apportionment of volatile organic compounds (VOCs) was examined using receptor models (positive matrix factorization and chemical mass balance) and a chemical transport model (CTM). The receptor model-based analysis was performed using the datasets collected from four different sites from the megacity of Seoul during the years 2013-2015. The contributions of VOC emission sources to ozone (O-3) and PM2.5 concentrations and the subsequent health effects in the study area were also assessed during a photochemically active period (June 2015) using a three-dimensional CTM, Community Multiscale Air Quality (CMAQ), and the Environmental Benefits Mapping and Analysis Program (BenMAP). The solvent use and the on-road mobile emission sources were found to exert dominant controls on the VOC levels observed in the target city. VOCs transported from regions outside of Seoul accounted for a significant proportion (up to approximately 35%) of ambient VOC levels during the study period. The solvent use accounted for 3.4% of the ambient O-3 concentrations during the day (daily mean of 2.6%) and made insignificant contributions to PM2.5 (<1%) during the simulation period. Biogenic VOC made insignificant contributions to O-3 (<1%) and a small contribution to PM2.5 during the day (5.6% with a daily mean of 2.4%). The number of premature deaths attributed indirectly (O-3 and PM2.5 formations via the oxidation of VOCs) to solvent use is expected to be significant.
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