Determination of VOC source signature of vehicle exhaust in a traffic tunnel

Journal of Environmental Management
Kwangsam Na

Abstract

This study describes the methodology used to obtain the volatile organic compound (VOC) source signature of vehicle exhaust. To accomplish this, C(2)-C(9) VOCs were measured in a traffic tunnel located in Seoul, South Korea. The effect of VOC concentrations from the outside ambient air was considered in the determination of the source signature. To examine the effects of ambient air on VOC concentrations inside the tunnel, the ratio of propane to the total VOC concentrations was compared between the entrance and middle sites in the tunnel. Propane was used as a standard not only because of its insignificant contribution to vehicle exhaust gas, but also the fact that propane is the most abundant VOC in the atmosphere of Seoul. The ratio of propane to the total VOC concentrations was higher at the entrance site than at the middle location by, on average, 60%. This suggests that ambient air affects the inside tunnel air to a greater extent at the entrance site as compared to the middle site. The contribution of ambient air to the air inside the tunnel at the entrance location varied from 30% to 67%, with an average of 55%. This is 1.5 times higher than the value measured at the middle location, which ranged from 20% to 48%, with a...Continue Reading

References

Mar 10, 2004·Chemosphere·Kwangsam NaKil-Choo Moon

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Citations

Jan 19, 2011·Environmental Monitoring and Assessment·Pranas BaltrėnasPaulo Pereira
Aug 9, 2011·Environmental Monitoring and Assessment·Chia-Hsiang Lai, Yen-Ping Peng
Nov 10, 2011·Journal of Environmental Sciences (China)·Chia-Hsiang Lai, Yen-Ping Peng
Feb 1, 2013·Journal of the Air & Waste Management Association·Yacine Kerchich, Rabah Kerbachi
May 17, 2014·Environmental Science and Pollution Research International·T SalamehN Locoge
Jan 17, 2013·The Science of the Total Environment·Jun WangChang-Yu Wu
Jan 20, 2015·Journal of Environmental Sciences (China)·Hongli WangJun Lu
Jan 5, 2018·International Journal of Environmental Research and Public Health·David A Morgott

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