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Clean Technologies and Environmental Policy

, Volume 16, Issue 6, pp 1193–1200 | Cite as

Status of PM in Seoul metropolitan subway cabins and effectiveness of subway cabin air purifier (SCAP)

  • Jong-Bum Kim
  • Seyoung Kim
  • Gwang-Jae Lee
  • Gwi-Nam Bae
  • Youngmin Cho
  • Duckshin Park
  • Duck-Hee Lee
  • Soon-Bark KwonEmail author
Original Paper

Abstract

The increasing importance of indoor air quality management on public transport led the Korean government to amend the indoor air quality control in public use facilities, etc. Act including modes of public transport under the Act from June 2013. Particulate matter (PM) in subway systems is reported as being mostly generated by friction—between the wheels and the rails, between the wheels and the brake pads, and between the catenaries and the pantographs. In order to reduce PM level in subway cabins, a newly developed subway cabin air purifier (SCAP) was installed on the ceilings of the cabins. In this study, we analyzed indoor PM concentrations through continuous measurement of PMs less than 10 μm in diameter (PM10) and PMs less than 2.5 μm in diameter (PM2.5) in the cabins of line 2 and line 5 of the Seoul metropolitan subway network, comparing the concentrations in cabins where SCAP devices were installed to cabins without them in order to verify SCAP effectiveness. In both cabins with and without SCAP, the ratio of indoor to outdoor PM10 (I/O for PM10) showed a two-times higher value in line 5 than in line 2, which indicated that the entirely underground line 5 was less ventilated with outdoor air. In addition, the ratio of indoor PM2.5/PM10 showed that coarse mode PM was more abundant in line 5 due to poor ventilation in the tunnel sections compared to that of line 2. Regarding the effectiveness of SCAP, it was found that changes of PM10 concentrations in line 2 and line 5 were from 132.8 to 112.2 μg/m3 (15.5 % efficiency) and from 154.4 to 114.2 μg/m3 (26.0 % efficiency) after SCAP installation, respectively.

Keywords

Subway cabin air purifier (SCAP) Indoor air quality (IAQ) Subway cabin Particulate matter (PM) PM10 PM2.5 

Notes

Acknowledgments

This study was supported by a Future Urban Railway A-01 (No. 09) research grant from the Korean Ministry of Land, Infrastructure, and Transport.

References

  1. Aarnio P, Yli-Tuomi T, Kousa A, Makela T, Hirsikko A, Hameri K, Raisanen M, Hillamo R, Koskentalo T, Jantunen M (2005) The concentrations and composition of and exposure to fine particles (PM2.5) in the Helsinki subway system. Atmos Environ 39:5059–5066CrossRefGoogle Scholar
  2. Adam HS, Nieuwenhuijsen MJ, Colvile RN, McMullen MAS, Khandelwal P (2001) Fine particle (PM2.5) personal exposure levels in transport microenvironments, London, UK. Sci Total Environ 279:29–44CrossRefGoogle Scholar
  3. Air Korea (2011-2013). Real-time air quality http://www.airkorea.or.kr/airkorea/eng. Accessed 11 Jan 2013
  4. Assimakopoulos MN, Dounis A, Spanou A, Santamouris M (2013) Indoor air quality in a metropolitan area metro using fuzzy logic assessment system. Sci Total Environ 449:461–469CrossRefGoogle Scholar
  5. Branis M (2006) The contribution of ambient sources to particulate pollution in spaces and trains of the Prague underground transport system. Atmos Environ 40:348–356CrossRefGoogle Scholar
  6. Chan LY, Lau WL, Lau SC, Chan CY (2002a) Commuter exposure to particulate matter in public transportation modes in Hong Kong. Atmos Environ 36:3363–3373CrossRefGoogle Scholar
  7. Chan LY, Lau WL, Zou SC, Cao ZX, Lai SC (2002b) Exposure level of carbon monoxide and respirable suspended particulate in public transportation modes while commuting in urban area of Guangzhou, China. Atmos Environ 36:5831–5840CrossRefGoogle Scholar
  8. Cheng Y-H, Lin Y-L, Liu C-C (2008) Levels of PM10 and PM2.5 in Taipei rapid transit system. Atmos Environ 42:7242–7249CrossRefGoogle Scholar
  9. Chillrud SN, Epstein D, Ross JM, Sax SN, Pederson D, Spengler JD, Kinney PL (2004) Elevated airborne exposures of teenagers to manganese, chromium, and iron from steel dust and New York city’s subway system. Environ Sci Technol 38:732–737CrossRefGoogle Scholar
  10. Colombi C, Angius S, Gianelle V, Lazzarini M (2013) Particulate matter concentrations, physical characteristics and elemental composition in the Milan underground transport system. Atmos Environ 70:166–178CrossRefGoogle Scholar
  11. Fromme H, Oddoy A, Piloty M, Krause M, Lahrz T (1998) Polycyclic aromatic hydrocarbons (PAH) and diesel engine emission (elemental carbon) inside a car and a subway train. Sci Total Environ 217:165–173CrossRefGoogle Scholar
  12. Gomez-Perales JE, Colvile RN, Fernandez-Bremaintz AA, Gutierrez-Avedoy V, Paramo-Figueroa VH, Blanco-Jimenez S, Bueno-Lopez E, Bernabe-Cabanillas R, Mandujano F, Hidalgo-Navarro M, Nieuwenhuijsen MJ (2007) Bus, minibus, metro inter-comparison of commuters’ exposure to air pollution in Mexico city. Atmos Environ 41:890–901CrossRefGoogle Scholar
  13. Jung H-J, Kim BW, Malek MA, Ryu JY, Maskey S, Kim J-C, Sohn J, Ro C-U (2010) Source identification of particulate matter collected at underground subway stations in Seoul, Korea using quantitative single-particle analysis. Atmos Environ 44:2287–2293CrossRefGoogle Scholar
  14. Jung H-J, Kim BW, Malek MA, Koo YS, Jung JH, Son Y-S, Kim J-C, Kim HK, Ro C-U (2012a) Chemical specification of size-segregated floor dusts and airborne magnetic particles collected at underground subway stations in Seoul, Korea. J Hazard Mater 213–214:331–340CrossRefGoogle Scholar
  15. Jung MH, Kim HR, Park YJ, Park DS, Chung KH, Oh SM (2012b) Genotoxic effects and oxidative stress induced by organic extracts of particulate. Mutat Res 749:39–47CrossRefGoogle Scholar
  16. Kam W, Cheung K, Daher N, Sioutas C (2011) Particulate matter (PM) concentrations in underground and ground and ground-level rail system of the Los Angeles metro. Atmos Environ 45:1506–1516CrossRefGoogle Scholar
  17. Karlsson HL, Nilsson LM, Moller L (2005) Subway particles are more genotoxic than street particles and induce oxidative stress in cultured human lung cells. Chem Res Toxicol 18:19–23CrossRefGoogle Scholar
  18. Kim KY, Kim YS, Roh YM, Lee CM, Kim CN (2008) Spatial distribution of particulate matter (PM10 and PM2.5) in Seoul metropolitan subway stations. J Hazard Mater 154:440–443CrossRefGoogle Scholar
  19. Kim K-H, Ho DX, Jeon J-S, Kim J-C (2012) A noticeable shift in particulate matter levels after platform screen door installation in a Korean subway station. Atmos Environ 49:219–223CrossRefGoogle Scholar
  20. KOSIS (2013). Korean statistical information service (http://kosis.kr/eng). Accessed 9 July 2013
  21. Kwon S-B, Cho Y, Park D, Park E-Y (2008) Study on the indoor air quality of Seoul metropolitan subway during the rush hour. Indoor Built Environ 17:361–369CrossRefGoogle Scholar
  22. Kwon S-B, Park D, Cho Y, Park E-Y (2010) Measurement of natural ventilation rate in Seoul metropolitan subway cabin. Indoor Built Environ 19:366–374CrossRefGoogle Scholar
  23. Kwon S-B, Park D-S, Cho Y, Kim J-B, Nangoong S, Han T-W, Cho K, Kim T (2011) Development of air cleaning roll-filter for improving IAQ in subway. J Korean Soc Railway 14:313–319CrossRefGoogle Scholar
  24. Li T–T, Bai Y-H, Liu Z-R, Li J-L (2007) In-train air quality assessment of the railway transit system in Beijing: a note. Transport Res D 12:64–67CrossRefGoogle Scholar
  25. Loxham M, Cooper MJ, Gerlofs-Nijland ME, Cassee FR (2013) Physicochemical characterization of airborne particulate matter at a mainline underground railway station. Environ Sci Technol 47:3614–3622CrossRefGoogle Scholar
  26. Ministry of Environment (2007). Guidelines on the management of indoor air quality of public transportation, Korean Ministry of Environment, KoreaGoogle Scholar
  27. Ministry of Environment (2009). A study on public transportation IAQ actual condition survey and best management practices, Korea Railroad Research Institute, KoreaGoogle Scholar
  28. Ministry of Environment (2010). Personal exposure assessment according to time activity of nation (III), Catholic University of Daegu, KoreaGoogle Scholar
  29. Nieuwenhuijsen MJ, Gomez-Perales JE, Colvile RN (2007) Review—levels of particulate air pollution, its elemental composition, determinants and health effect in metro systems. Atmos Environ 41:7995–8006CrossRefGoogle Scholar
  30. Park DU, Ha KC (2008) Characteristics of PM10, PM2.5, CO2 and CO monitored in interiors and platforms of subway train in Seoul, Korea. Environ Int 34:629–634CrossRefGoogle Scholar
  31. Park E-Y, Park D, Cho Y, Kwon S-B, Choi K, Kwon M (2011) Air quality in the subway cabins of the Seoul metropolitan area and analysis of its influencing factors using multivariate statistics. J Korean Soc Atmos Environ 27:142–151CrossRefGoogle Scholar
  32. Park D, Oh M, Yoon Y, Park E, Lee K (2012) Source identification of PM10 pollution in subway passenger cabins using positive matrix factorization. Atmos Environ 49:180–185CrossRefGoogle Scholar
  33. Querol X, Moreno T, Karanasiou A, Reche C, Alastuey A, Viana M, Font O, Gil J, de Miguel E, Capdevila M (2012) Variability of levels and composition of PM10 and PM2.5 in the Barcelona metro system. Atomos Chem Phys 12:5055–5076CrossRefGoogle Scholar
  34. Seaton A, Cherrie J, Dennekamp M, Donaldson K, Hurley JF, Tran CL (2005) The London underground: dust and hazards to health. Occup Environ Med 62:355–362CrossRefGoogle Scholar
  35. Sohn JR, Kim J-C, Kim MY, Son Y-S, Sunwoo Y (2008) Particulate behavior in subway airspace. Asian J Atmos Environ 2:54–59CrossRefGoogle Scholar
  36. Zhang W-J, Sun Y-L, Zhuang G-S, Xu D-Q (2006) Characteristics and seasonal variations of PM2.5, PM10, and TSP aerosols in Beijing. Biomed Environ Sci 19:461–468Google Scholar

Copyright information

© Springer-Verlag Berlin Heidelberg 2013

Authors and Affiliations

  • Jong-Bum Kim
    • 1
    • 3
  • Seyoung Kim
    • 2
    • 3
  • Gwang-Jae Lee
    • 1
    • 3
  • Gwi-Nam Bae
    • 1
  • Youngmin Cho
    • 3
  • Duckshin Park
    • 3
  • Duck-Hee Lee
    • 3
  • Soon-Bark Kwon
    • 3
    Email author
  1. 1.Center for Environment, Health and Welfare ResearchKorea Institute of Science and Technology (KIST)SeoulKorea
  2. 2.Department of Chemical and Material EngineeringKanazawa UniversityKanazawaJapan
  3. 3.Eco-Transport System Research DepartmentKorea Railroad Research Institute (KRRI)UiwangKorea

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