Particle and aerosol research (한국입자에어로졸학회지)

Korean Association for Particle and Aerosol Research (한국입자에어로졸학회)
권호 표지

Spatial Distribution of Air Pollution Level inside Roadway Tunnels in Urban Area

도시 자동차도로 터널 내부의 대기오염도 공간분포 특징

  • Park, Bo-Eun (Center for Environment, Health and Welfare Research, Korea Institute of Science and Technology) ;
  • Lee, Seung-Bok (Center for Environment, Health and Welfare Research, Korea Institute of Science and Technology) ;
  • Lee, Dong-Hun (Center for Environment, Health and Welfare Research, Korea Institute of Science and Technology) ;
  • Lee, Seung Jae (Center for Environment, Health and Welfare Research, Korea Institute of Science and Technology) ;
  • Woo, Dae-Kwang (Center for Environment, Health and Welfare Research, Korea Institute of Science and Technology) ;
  • Choi, Jae-Hyun (Center for Environment, Health and Welfare Research, Korea Institute of Science and Technology) ;
  • Jin, Hyoun-Cher (Center for Environment, Health and Welfare Research, Korea Institute of Science and Technology) ;
  • Bae, Gwi-Nam (Center for Environment, Health and Welfare Research, Korea Institute of Science and Technology) ;
  • Yun, Seong-Taek (Green School (Graduate School of Energy and Environment), Korea University)
  • 박보은 (한국과학기술연구원 환경복지연구단) ;
  • 이승복 (한국과학기술연구원 환경복지연구단) ;
  • 이동훈 (한국과학기술연구원 환경복지연구단) ;
  • 이승재 (한국과학기술연구원 환경복지연구단) ;
  • 우대광 (한국과학기술연구원 환경복지연구단) ;
  • 최재현 (한국과학기술연구원 환경복지연구단) ;
  • 진현철 (한국과학기술연구원 환경복지연구단) ;
  • 배귀남 (한국과학기술연구원 환경복지연구단) ;
  • 윤성택 (고려대학교 그린스쿨(에너지환경정책기술대학원))
  • Published : 2012.03.31
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Abstract

Air pollution levels of gases and aerosol particles inside the Jeongneung and Hongjimun tunnels of the Naebu express way in Seoul were investigated through on-road measurement using a mobile emission laboratory (MEL) on February 8, 2011. The concentrations of $NO_x$, $CO_2$, number concentration of particles ranging 21-560 nm, and surface area of particles deposited on a human lung almost linearly increased with increasing distance from the tunnel entrance, and decreased rapidly before the tunnel exit. This trend was observed regardless of tunnel length and driving directions, which thought to be caused by semi-transverse ventilation facilities of the tunnels. The concentration increments per 1-m distance for $NO_x$, $CO_2$, deposited particle surface area, and number of particles ranging 21-560 nm were 0.61~0.80 ppb, 0.16~0.21 ppm, $0.20{\sim}0.29{\mu}m^2/cm^3$, and 117~192 particles/$cm^3$, respectively. Average pollution levels inside the two tunnels for $CO_2$, deposited particle surface area, and number of particles >5.6 nm ranged 681~748 ppm, $246{\sim}381{\mu}m^2/cm^3$, and $2.4{\sim}6.7{\times}10^5$ particles/$cm^3$, respectively. In case of $NO_x$, the maximum concentration exceeded 1 ppm. These pollution levels inside the tunnels are much higher than those at urban background sites. This result can be utilized as basic data to evaluate the effectiveness of present ventilation system for reducing the pollution level caused by vehicles inside the tunnels.

Keywords

References

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