Journal of Korean Society for Atmospheric Environment (한국대기환경학회지)

Korean Society for Atmospheric Environment (한국대기환경학회)
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Identifying Ambient PM2.5 Sources and Estimating their Contributions by Using PMF : Separation of Gasoline and Diesel Automobile Sources by Analyzing ECs and OCs

PMF 모델을 이용한 미세분진의 오염원 확인과 기여도 추정 : 탄소성분을 이용한 휘발유 및 경유차량 오염원의 분리

  • Lee, Hyung-Woo (College of Environment & Applied Chemistry and Center for Environmental Studies, Kyung Hee University-Global Campus) ;
  • Lee, Tae-Jung (College of Environment & Applied Chemistry and Center for Environmental Studies, Kyung Hee University-Global Campus) ;
  • Kim, Dong-Sool (College of Environment & Applied Chemistry and Center for Environmental Studies, Kyung Hee University-Global Campus)
  • 이형우 (경희대학교 대학원 환경응용과학과 대기오염연구실 및 환경연구센터) ;
  • 이태정 (경희대학교 대학원 환경응용과학과 대기오염연구실 및 환경연구센터) ;
  • 김동술 (경희대학교 대학원 환경응용과학과 대기오염연구실 및 환경연구센터)
  • Published : 2009.02.28
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Abstract

The purpose of this study was to identify $PM_{2.5}$ sources and to estimate their contributions to the border of Yongin-Suwon area, based on the analysis of the $PM_{2.5}$ mass concentration and the associated inorganic elements, ions and carbon components. The contribution of $PM_{2.5}$ sources were estimated by using a positive matrix factorization (PMF) model to identify air emission sources. For this study, $PM_{2.5}$ samples were collected from May, 2007 to April, 2008. The inorganic elements were analyzed by an ICP-AES. The ionic components in $PM_{2.5}$ were analyzed by an Ie. The carbon components were also analyzed by DRI/OGC analyzer. After performing PMF modeling, a total of 12 sources were identified and their contributions were quantitatively estimated. The contributions from each emission source were as follows: 11.3% from oil combustion source, 3.4% from bus/highway source, 5.8% from diesel vehicle source, 4.7% from gasoline vehicle source, 8.8% from biomass burning source, 15.1 % from secondary sulfate, 5.2% from secondary nitrate source, 13.4% from industrial related source, 4.1% from Cl-rich source, 19.6% from soil related source, 1.0% from aged sea salt, and 7.4% from coal combustion source, respectively. This study provides basic information on the major sources affecting air quality, and then it will help to effectively control $PM_{2.5}$ in this study area.

Keywords

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