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Local formation of sulfates contributes to the urban haze with regional transport origin

Title
Local formation of sulfates contributes to the urban haze with regional transport origin
Authors
Lim, Yong BinSeo, JihoonKim, Jin YoungKim, Yong PyoJin, Hyun Cher
Ewha Authors
김용표임용빈
SCOPUS Author ID
김용표scopus
Issue Date
2020
Journal Title
ENVIRONMENTAL RESEARCH LETTERS
ISSN
1748-9326JCR Link
Citation
ENVIRONMENTAL RESEARCH LETTERS vol. 15, no. 8
Keywords
East Asian hazeregional transportgas-particle partitioning of semivolatile inorganic species
Publisher
IOP PUBLISHING LTD
Indexed
SCIE; SCOPUS WOS
Document Type
Article
Abstract
Urban particle pollution is affected by not only the emissions of pollutants and secondary aerosol formation through atmospheric chemistry on a local scale, but also the regional transport of particles and precursor gases from highly polluted upwind areas. However, this regional impact on urban particle formation is not well understood. Wintertime haze events occur at Seoul, Korea through the combination of regional transport from China and local formation at Seoul. We perform thermodynamic model simulations based on inorganic component measurements of haze particles collected at Seoul and Deokjeok Island (upwind background). Results suggest that in the downwind area (Seoul) the local formation of sulfates increases the mass concentrations of transported particles through the gas-particle partitioning of semivolatile nitric acid (HNO3) and ammonia (NH3). Therefore, this synergetic effect of the local sulfate formation on urban haze with regional transport must be considered in implementing effective particle reduction controls for urban sustainability.
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DOI
10.1088/1748-9326/ab83aa
Appears in Collections:
엘텍공과대학 > 화학신소재공학전공 > Journal papers
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