Journal of Korean Society for Atmospheric Environment (한국대기환경학회지)

Korean Society for Atmospheric Environment (한국대기환경학회)
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Air Quality in the Subway Cabins of the Seoul Metropolitan Area and Analysis of Its Influencing Factors Using Multivariate Statistics

수도권 전동차에서의 공기질 현황 및 다변량 통계분석을 이용한 공기질 영향인자 분석

  • Park, Eun-Young (University of Science and Technology, National Institute of Environmental Research) ;
  • Park, Duck-Shin (Korea Railroad Research Institute, National Institute of Environmental Research) ;
  • Cho, Young-Min (Korea Railroad Research Institute, National Institute of Environmental Research) ;
  • Kwon, Soon-Bark (Korea Railroad Research Institute, National Institute of Environmental Research) ;
  • Choi, Kyung-Hee (Indoor Environmental Research Division, National Institute of Environmental Research) ;
  • Kwon, Myung-Hee (Indoor Environmental Research Division, National Institute of Environmental Research)
  • Received : 2010.07.08
  • Accepted : 2011.01.12
  • Published : 2011.04.30
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Abstract

In this study, we have observed PM-10 and $CO_2$ concentration in the subway cabins and analyzed the factors affecting air quality using a multivariate statistical analysis. The measurements have been conducted at Seoul metropolitan subway lines. The results show that the mean concentration of the PM-10 and $CO_2$ inside subway cabins is in the range of 62.6 to 108.0 ${\mu}g/m^3$ and 907 to 2,008 ppm, respectively. $CO_2$ level in specific sections during the rush hours has exceeded air quality guidelines for public transportation, which requires designated train ventilation controls. Correlation and regression analyses of influencing factors imply that $CO_2$ level is severely influenced by the number of passengers and PM-10 level is also correlated with the number of passengers. In particular, PM-10 level in the cabins indicates a positive correlation with outdoor PM-10 level. In addition, the PM concentration has been highly affected by the number of passengers and distance between stations.

Keywords

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