한국대기환경학회지 (Journal of Korean Society for Atmospheric Environment)

  • 제26권5호
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  • Pages.543-553
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  • 2010
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  • 1598-7132(pISSN)
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  • 2383-5346(eISSN)
한국대기환경학회 (Korean Society for Atmospheric Environment)
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서울시 지하철 승강장의 스크린도어 설치 전·후 PM10 오염원의 기여도 비교 연구

A Comparative Study on PM10 Source Contributions in a Seoul Metropolitan Subway Station Before/After Installing Platform Screen Doors

  • 이태정 (경희대학교 환경학 및 환경공학과) ;
  • 전재식 (서울특별시 보건환경연구원) ;
  • 김신도 (서울시립대학교 환경공학과) ;
  • 김동술 (경희대학교 환경학 및 환경공학과)
  • Lee, Tae-Jung (Department of Environmental Science and Engineering, Kyung Hee University) ;
  • Jeon, Jae-Sik (Seoul Metropolitan Government Research Institute of Public Health and Environment) ;
  • Kim, Shin-Do (Department of Environmental Engineering, University of Seoul) ;
  • Kim, Dong-Sool (Department of Environmental Science and Engineering, Kyung Hee University)
  • 투고 : 2010.05.18
  • 심사 : 2010.09.03
  • 발행 : 2010.10.31
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초록

Almost five million citizens a day are using subways as a means of traffic communication in the Seoul metropolitan. As the subway system is typically a closed environment, indoor air pollution problems frequently occurs and passengers complain of mal-health impact. Especially $PM_{10}$ is well known as one of the major pollutants in subway indoor environments. The purpose of this study was to compare the indoor air quality in terms of $PM_{10}$ and to quantitatively compare its source contributions in a Seoul subway platform before and after installing platform screen doors (PSD). $PM_{10}$ samples were collected on the J station platform of Subway Line 7 in Seoul metropolitan area from Jun. 12, 2008 to Jan. 12, 2009. The samples collected on membrane filters using $PM_{10}$ mini-volume portable samplers were then analyzed for trace metals and soluble ions. A total of 18 chemical species (Ba, Mn, Cr, Cd, Si, Fe, Ni, Al, Cu, Pb, Ti, $Na^+$, $NH_4^+$, $K^+$, $Mg^{2+}$, $Ca^{2+}$, $Cl^-$, and ${SO_4}^{2-}$) were analyzed by using an ICP-AES and an IC after performing proper pre-treatments of each sample filter. Based on the chemical information, positive matrix factorization (PMF) model was applied to identify the source of particulate matters. $PM_{10}$ for the station was characterized by three sources such as ferrous related source, soil and road dust related source, and fine secondary aerosol source. After installing PSD, the average $PM_{10}$ concentration was decreased by 20.5% during the study periods. Especially the contribution of the ferrous related source emitted during train service in a tunnel route was decreased from 59.1% to 43.8% since both platform and tunnel areas were completely blocked by screen doors. However, the contribution of the fine secondary aerosol source emitted from various outside combustion activities was increased from 14.8% to 29.9% presumably due to ill-managed ventilation system and confined platform space.

키워드

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  8. Concentration and Properties of Particulate Matters (PM10 and PM2.5) in the Seoul Metropolitan vol.31, pp.2, 2015, https://doi.org/10.5572/KOSAE.2015.31.2.164
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  10. The Size-Oriented Particulate Mass Ratios and Their Characteristics on the Seoul Metropolitan Subway Lines vol.10, pp.4, 2016, https://doi.org/10.5572/ajae.2016.10.4.217
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  12. Characterizing Par ticle Matter on the Main Section of the Seoul Subway Line-2 and Developing Fine Particle Pollution Map vol.32, pp.2, 2016, https://doi.org/10.5572/KOSAE.2016.32.2.216
  13. in a subway tunnel using positive matrix factorization vol.64, pp.12, 2014, https://doi.org/10.1080/10962247.2014.950766
  14. Status of particulate matter pollution in urban railway environments vol.17, pp.4, 2018, https://doi.org/10.15250/joie.2018.17.4.303