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Characteristics of PM10 Levels Monitored for More than a Decade in Subway Stations in South Korea

Category: Urban Air Quality

Volume: 19 | Issue: 12 | Pages: 2746-2756
DOI: 10.4209/aaqr.2019.05.0263
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To cite this article:
Choi, S., Park, J.H., Bae, S.Y., Kim, S.Y., Byun, H., Kwak, H., Hwang, S., Park, J., Park, H., Lee, K.H., Kim, W. and Park, D.U. (2019). Characteristics of PM10 Levels Monitored for More than a Decade in Subway Stations in South Korea. Aerosol Air Qual. Res. 19: 2746-2756. doi: 10.4209/aaqr.2019.05.0263.

Sangjun Choi1, Ju-Hyun Park2, Seo-Yeon Bae3, So-Yeon Kim3, Hyaejeong Byun4, Hyunseok Kwak5, Sungho Hwang6, Jihoon Park7, Hyunhee Park8, Kyong-Hui Lee9, Won Kim10, Dong-Uk Park 3

  • 1 Department of Occupational Health, Daegu Catholic University, Gyeongsangbuk-do 38430, Korea
  • 2 Department of Statistics, Dongguk University, Seoul 04620, Korea
  • 3 Department of Environmental Health, Korea National Open University, Seoul 03087, Korea
  • 4 Samsung SDS Co., Ltd., Seoul 05510, Korea
  • 5 Occupational Lung Diseases Institute, Korea Workers’ Compensation and Welfare Service, Incheon 21417, Korea
  • 6 National Cancer Control Institute, National Cancer Center, Goyang 10408, Korea
  • 7 Environmental Safety Group, Korea Institute of Science and Technology Europe Forschungsgesellschaft mbH, 66123 Saarbrücken, Germany
  • 8 Occupational Safety and Health Research Institute, Ulsan 44429, Korea
  • 9 Force Health Protection and Preventive Medicine, US Army MEDDAC-Korea, Unit 15281, APO AP 96205-5281, USA
  • 10 Wonjin Institute of Occupational and Environmental Health, Seoul 02221, Korea

Highlights

  • The average PM10 levels decreased by year in all stations and city.
  • The PM10 levels were far higher than the yearly average ambient air quality.
  • Some of subway characteristics were found to influence the PM10 level.
  • Platform screen doors, number of transfer lines were factors influencing the PM10.

Abstract

This study aimed to evaluate the variation in PM10 concentration and identify the factors influencing it in Korean subways during the past decade. The PM10 measured internally by subway companies according to legal requirements was categorized by the subway’s characteristics, which were statistically examined using a mixed effects model to identify the relevant parameters. The average levels monitored near or on the platforms and in the waiting rooms ranged from 53.9 to 92.4 µg m−3, remaining below the Indoor Air Quality Control Act regulatory standard of 150 µg m−3. However, the levels monitored on the platforms far exceeded the average yearly atmospheric environmental standard (50 µg m−3). Based on both univariate and multiple analyses, several subway characteristics, including the presence of a platform screen door (PSD), were found to significantly correlate with the concentration, although slight differences in the significant factors were detected between the cities. Particularly, the absence of transfer lines and the presence of a PSD reduced the platform concentration, except at Busan and during specific years.

Keywords

Subway PM10 Platform screen door (PSD) Indoor air quality


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