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송창근

Song, Chang-Keun
Air Quality Impact Assessment Research Lab.
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Mapping the spatial distribution of primary and secondary PM2.5 in a multi-industrial city by combining monitoring and modeling results

Author(s)
Lee, Sang-JinLee, Ho -YoungKim, Seong-JoonKim, Nam-KyuJo, MinjaeSong, Chang-KeunKim, HyoseonKang, Hyun-JungSeo, Young-KyoShin, Hye-JungChoi, Sung-Deuk
Issued Date
2024-05
DOI
10.1016/j.envpol.2024.123774
URI
https://scholarworks.unist.ac.kr/handle/201301/82915
Citation
ENVIRONMENTAL POLLUTION, v.348, pp.123774
Abstract
Industrial cities are strongly influenced by primary emissions of PM2.5 from local industries. In addition, gaseous precursors, such as sulfur oxides (SOX), nitrogen oxides (NOX), and volatile organic compounds (VOCs), emitted from industrial sources, undergo conversion into secondary inorganic and organic aerosols (SIAs and SOAs). In this study, the spatial distributions of primary and secondary PM2.5 in Ulsan, the largest industrial city in South Korea, were visualized. PM2.5 components (ions, carbons, and metals) and PM2.5 precursors (SO2, NO2, NH3, and VOCs) were measured to estimate the concentrations of secondary inorganic ions (SO42-, NO3, and NH4+) and secondary organic aerosol formation potential (SOAFP). The spatial distributions of SIAs and SOAs were then plotted by combining atmospheric dispersion modeling, receptor modeling, and monitoring data. Spatial distribution maps of primary and secondary PM2.5 provide fundamental insights for formulating management policies in different districts of Ulsan. For instance, among the five districts in Ulsan, Nam-gu exhibited the highest levels of primary PM2.5 and secondary nitrate. Consequently, controlling both PM2.5 and NO2 emissions becomes essential in this district. The methodology developed in this study successfully identified areas with dominant contributions from both primary emissions and secondary formation. This approach can be further applied to prioritize control measures during periods of elevated PM levels in other industrial cities.
Publisher
ELSEVIER SCI LTD
ISSN
0269-7491
Keyword (Author)
PASCALPUFFPrimary PM2.5PMFSecondary PM2.5
Keyword
CHEMICAL-CHARACTERIZATIONORGANIC AEROSOL FORMATIONSOURCE IDENTIFICATIONSOURCE APPORTIONMENTPARTICULATE MATTERSIZE DISTRIBUTIONAIR-POLLUTANTSPOLLUTIONAMMONIUMEMISSIONS

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