Journal of Korean Society for Atmospheric Environment (한국대기환경학회지)

Korean Society for Atmospheric Environment (한국대기환경학회)
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A Study on the PM2.5 Source Characteristics Affecting the Seoul Area Using a Chemical Mass Balance Receptor Model

수용모델을 이용한 서울지역 미세입자 (PM2.5)에 영향을 미치는 배출원 특성에 관한 연구

  • Lee Hak Sung (Department of Environmental, Civil and Information System, Seowon University) ;
  • Kang Choong-Min (Department of Environmental Health, Harvard School of Public Health, Harvard University) ;
  • Kang Byung-Wook (Department of Environmental Industry, Chongju National College of Science and Technology) ;
  • Lee Sang-Kwun (Department of Environmental Science, Hankuk University of Foreign Studies)
  • 이학성 (서원대학교 환경건설정보학과) ;
  • 강충민 (Harvard 보건대학원) ;
  • 강병욱 (국립청주과학대학 환경공업과) ;
  • 이상권 (한국외국어대학교 환경학과)
  • Published : 2005.06.01
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Abstract

The purpose of this study is to study the $PM_{2.5}$ source characteristics affecting the Seoul area using a chemical mass balance (CMB) receptor model. This study was also to evaluate the $PM_{2.5}$ source profiles, which were directly measured and developed. Asian Dust Storm usually occurred in the spring, and very high $PM_{2.5}$ concentrations were observed in the fall among the sampling periods. So the ambient data collected in the spring and fall were evaluated. The CMB model results as well as the $PM_{2.5}$ source profiles were validated using the diagnostic categories, such as: source contribution estimate, t-statistic, R-square, Chi-square, and percent of total mass explained. In the spring months, the magnitude of $PM_{2.5}$ mass contributors was in the following order: Chinese aerosol $(31.7\%)>$ secondary aerosols ($22.3\%$: ammonium sulfate $13.4\%$ and ammonium nitrate $8.9\%)>$ vehicles ($16.1\%$: gasoline vehicle $1.4\%$ and diesel vehicles $14.7\%)>$biomass burning $(15.5\%)>$ geological material $(10.5\%)$. In the fall months, the general trend of the $PM_{2.5}$ mass contributors was the following: biomass burning $(31.1\%)>$ vehicles ($26.9\%$: gasoline vehicle $5.1\%$ and diesel vehicles $21.8\%)>$ secondary aerosols ($23.0\%$: ammonium sulfate $9.1\%$ and ammonium nitrate $13.9\%)>$ Chinese aerosol $(10.7\%)$. The results show that the $PM_{2.5}$ mass in the Seoul area was mainly affected by the Chinese area.

Keywords

References

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