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Receptor model(CMB) and source apportionments of VOCs in Seoul metropolitan area

  • Journal of Environmental Impact Assessment
  • Abbr : J EIA
  • 2005, 14(4), pp.227-235
  • Publisher : Korean Society Of Environmental Impact Assessment
  • Research Area : Engineering > Environmental Engineering

한진석 1 Sanguk Lee 1 LEE SUK JO 1 홍유덕 1 신선아 1

1국립환경연구원

Accredited

ABSTRACT

Source contribution for VOCs collected in Seoul metropolitan area was conducted usingPAMs (Photochemical assessment monitoring system) data and CMB(Chemical Mass Balance)model8.0, in order to estimate spatial and temporal variations of VOCs source contribution inthat area, and also to compare with corresponding emission inventory. VOCs data used inmodel calculation were collected at 6 different sites of PAMs(Seokmori, Guwoldong,Simgokdong, Bulgwangdong, Jeongdong and Yangpyeong) and 22 out of 56 VOCs specieswere analyzed from June 2002 to march 2003 and used for CMB model estimation. The resultshowed that vehicle exhaust, coating and energy combustion were important sources of VOCsin Seoul metropolitan area, averaging 32.6%, 25.5% and 25.1%, respectively. In this study aswell as other references, it was revealed that vehicle exhaust is the main contributor of urbanarea VOCs, but there is remarkable contrast between emission inventory and model estimation.Vehicle exhaust portion is seriously underestimated while coating is usually overestimated inemission estimates, compared to CMB results. Therefore, it is considered to assert and confirmthe uncertainty of emission estimates and clarify the distinction between two other sourceapportionment methods.

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