Spatial Distributions of PM2.5 Concentrations, Chemical Constituents, and Acidity for PM2.5 Pollution Events and Their Potential Source Contribution: Based on Observations from a Nationwide Air Quality Monitoring Network for 2018-2019

Byun, Myounghwa; Park, Jaehun; Han, Subin; Kim, Dae Gon; Jung, Dae Soo; Choi, Won-Sik

doi:10.5572/kosae.2022.38.4.508

Cited by 3 publications

(2 citation statements)

References 20 publications

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“…The city also records high emissions from non-industrial combustion in residential areas (Choi et al 2022). As Seoul is the largest city in South Korea and has approximately 20% of the total population of the country, there are numerous control policies to reduce the PM 2.5 emissions in the region (Bae et al residents.…”

Section: Study Areamentioning

confidence: 99%

“…The Republic of Korea promotes air-quality improvement policies by establishing comprehensive ne dust measures and air-quality management plans at the regional scale (e.g., metropolitan, central, southern, and southeastern regions), to reduce the PM 2.5 concentrations (Choi et al 2022). Improvement plans that consider the regional emission characteristics can be effective for managing the PM 2.5 concentrations in each zone.…”

Section: Introductionmentioning

confidence: 99%

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Physicochemical characteristics and seasonal variations of PM 2.5 in urban, industrial, and suburban areas in South Korea

Hwang¹,

Kim

Lee

et al. 2023

Preprint

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Among the Organization for Economic Co-operation and Development (OECD) countries, South Korea has the highest population exposure to PM2.5. Although the country’s diverse PM2.5 reduction policies have improved the pollution levels, the PM2.5 concentrations still pose serious environmental and health risks. Herein, we monitored the physicochemical components, such as ion, metal, organic carbon/ elemental carbon (OC/EC), and particle number concentrations, across different regions in South Korea for January 1–December 31, 2021. The study area consisted of the city center, industrial complexes, and suburban areas. Before analyzing the emission characteristics of each site, we compared the Clean Air Policy Support System (CAPSS) data for the three areas, to analyze the main emission sources. The annual particle number concentrations for the three areas were 21.8–26.44 µg/m3; the maximum values were evident in March. All the three areas portrayed high ratios of NO3− with different components in all seasons. The particle number concentrations in the three sites were 1.3–1.5 × 107, and the peak points of the concentrations were different in every site: city center (40 nm), industrial complexes (60 nm), and suburban areas (80 nm). We also conducted potential source contribution function (PSCF) and conditional bivariate probability function (CBPF) analyses, to determine the inflow direction of the pollution sources, for high PM2.5 episodes. For the episodes that occurred in spring and winter, there were no differences in the PM2.5 concentrations between the three sites. This study can serve as a framework for developing air-quality management policies in South Korea.

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Section: Study Areamentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Physicochemical characteristics and seasonal variations of PM 2.5 in urban, industrial, and suburban areas in South Korea

Hwang¹,

Kim

Lee

et al. 2023

Preprint

View full text Add to dashboard Cite

show abstract

Physicochemical characteristics and seasonal variations of PM2.5 in urban, industrial, and suburban areas in South Korea

Hwang,

Kim,

Lee

et al. 2023

Asian J. Atmos. Environ

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Among countries that are a part of the Organization for Economic Co-operation and Development, South Korea is the most exposed to PM2.5. Despite the country having implemented various strategies to limit PM2.5 emissions, its concentrations are still high enough to pose serious environmental and health concerns. Herein, we monitored various physiochemical properties of PM2.5 across different regions in South Korea from January 1 to December 31, 2021. Specifically, the study area consisted of the city center, industrial complexes, and suburban areas. Before analyzing dynamics of emissions specific to each site, the Clean Air Policy Support System data for the three areas were compared to elucidate their respective primary emission sources. The particle concentrations for the three areas were 21.8–26.44 µg/m3, with the highest concentrations being observed in March. All the three areas exhibited high ratios of NO3− across all seasons. The particle number concentrations in the three sites were 1.3–1.5 × 107, and the peak points of the concentrations were different in every site: city center (40 nm), industrial complexes (60 nm), and suburban areas (80 nm). We also conducted potential source contribution function and conditional bivariate probability function analyses. These analyses were conducted to determine the inflow direction of the pollution sources for high PM2.5 episodes. For the episodes that occurred in spring and winter, there were no differences in the PM2.5 concentrations between the three sites. Overall, the insights gained from this study offer a framework for developing air-quality management policies in South Korea, specifically in the context of PM2.5 emissions.

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Source Characteristics and Their Changes in PM2.5 in Ulsan: Based on PMF Results for 2020 Observations and a Review of Source Profiles Reported in Korea

Park¹,

Park²,

Choi³

et al. 2023

KOSAE

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Spatial Distributions of PM2.5 Concentrations, Chemical Constituents, and Acidity for PM2.5 Pollution Events and Their Potential Source Contribution: Based on Observations from a Nationwide Air Quality Monitoring Network for 2018-2019

Cited by 3 publications

References 20 publications

Physicochemical characteristics and seasonal variations of PM 2.5 in urban, industrial, and suburban areas in South Korea

Physicochemical characteristics and seasonal variations of PM 2.5 in urban, industrial, and suburban areas in South Korea

Physicochemical characteristics and seasonal variations of PM2.5 in urban, industrial, and suburban areas in South Korea

Source Characteristics and Their Changes in PM2.5 in Ulsan: Based on PMF Results for 2020 Observations and a Review of Source Profiles Reported in Korea

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