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Comparison of PM2.5 Pollution Status at a Major Transit Subway Station in Seoul

서울시 대규모 환승역의 지하철 호선별 PM2.5에 대한 오염현황 연구

  • Yu, Jung-Gil (Department of Civil and Environmental Engineering, Hanyang University) ;
  • Kim, Jae-Hyeuk (Department of Civil and Environmental Engineering, Hanyang University) ;
  • Kim, Kyeung-Phil (Department of Civil and Environmental Engineering, Hanyang University) ;
  • Jung, Soo-Young (Department of Civil and Environmental Engineering, Hanyang University) ;
  • Na, Kyu-In (Department of Civil and Environmental Engineering, Hanyang University) ;
  • Jo, Hyo-Jae (Department of Civil and Environmental Engineering, Hanyang University) ;
  • Sul, Kyeong-Hwa (Department of Civil and Environmental Engineering, Hanyang University) ;
  • Kim, Ki-Hyun (Department of Civil and Environmental Engineering, Hanyang University)
  • 유정길 (한양대학교 건설환경공학과) ;
  • 김재혁 (한양대학교 건설환경공학과) ;
  • 김경필 (한양대학교 건설환경공학과) ;
  • 정수영 (한양대학교 건설환경공학과) ;
  • 나규인 (한양대학교 건설환경공학과) ;
  • 조효재 (한양대학교 건설환경공학과) ;
  • 설경화 (한양대학교 건설환경공학과) ;
  • 김기현 (한양대학교 건설환경공학과)
  • Received : 2014.12.30
  • Accepted : 2015.04.24
  • Published : 2015.06.30

Abstract

We investigated the pollution levels of $PM_{2.5}$ at Wangsimni station at which four subway lines (Line 2, Line 5, the Jungang line, and the Bundang Line) are simultaneously under the operation. The analysis of $PM_{2.5}$ was made for the period of 1~ 11 Nov. 2014. The results of our field campaign were analyzed to assess the effects of various factors and conditions on the $PM_{2.5}$ pollution (such as installation of the screen door, density of floating population, weekdays and weekend, and the depth of platforms). The mean concentrations of $PM_{2.5}$ in each subway line of the Wangsimni station was measured as: the line 2 ($22.5{\mu}g/m^3$) ; the line 5 ($18.3{\mu}g/m^3$) ; the Jungang line ($31.8{\mu}g/m^3$); and the Bundang line ($32.2{\mu}g/m^3$). Based on the detailed analysis of $PM_{2.5}$ pollution at four subway lines, we aimed to provide some perspectives on reducing the concentration of ultrafine particles in a highly populated urban area.

Keywords

$PM_{2.5}$;Wangsimni;Subway station;Spatial-temporal variation;Korea;Screen door

Acknowledgement

Supported by : 한국연구재단

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