Characteristics of PM10 levels monitored for more than a decade in subway stations in South Korea

Sangjun Choi, Ju Hyun Park, Seo Yeon Bae, So Yeon Kim, Hyaejeong Byun, Hyunseok Kwak, Sungho Hwang, Jihoon Park, Hyunhee Park, Kyong Hui Lee, Won Kim, Dong Uk Park

Research output: Contribution to journalArticlepeer-review

8 Scopus citations

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.

Original languageEnglish
Pages (from-to)2746-2756
Number of pages11
JournalAerosol and Air Quality Research
Volume19
Issue number12
DOIs
StatePublished - Dec 2019

Keywords

  • Indoor air quality
  • Platform screen door (PSD)
  • PM
  • Subway

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