Journal of Korean Society for Atmospheric Environment (한국대기환경학회지)

Korean Society for Atmospheric Environment (한국대기환경학회)
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Characteristics of Chemical Composition in Carbonaceous Aerosol of PM2.5 Collected at Smoke from Coal Combustion

석탄 연소 시 발생되는 PM2.5 내 탄소 에어로졸의 화학 조성 연구

  • Chang, Yu Woon (Department of Environmental Engineering, Chosun University) ;
  • Joo, Hung Soo (Department of Environmental Engineering, Anyang University) ;
  • Park, Ki Hong (School of Environmental Science and Engineering, Gwangju Institute of Science and Technology) ;
  • Lee, Ji Yi (Department of Environmental Engineering, Chosun University)
  • 장유운 (조선대학교 환경공학과) ;
  • 주흥수 (안양대학교 환경에너지공학과) ;
  • 박기홍 (광주과학기술원 환경공학과) ;
  • 이지이 (조선대학교 환경공학과)
  • Received : 2017.03.27
  • Accepted : 2017.06.08
  • Published : 2017.06.30
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Abstract

The $PM_{2.5}$ samples were obtained from coal combustion with the four different combustion temperatures (550, 700, 900 and $1100^{\circ}C$) to understand chemical composition in carbonaceous aerosol. OC concentration was the highest when the combustion temperature was $550^{\circ}C$, while, the highest concentration for EC was shown at $700^{\circ}C$ of the coal combustion temperature. However, OC concentrations were very low and EC was not detected when the temperature was over $900^{\circ}C$. It indicates complete combustion was achieved when the combustion temperature was over $900^{\circ}C$. For six groups of organic compounds, n-alkanes and n-alkanoic acids were predominant at all of the combustion temperature in smoke of coal combustion, while, PAHs was only detected at $550^{\circ}C$. The diagnostic ratios of PAHs calculated in this study were 0.59 for Fluoranthene/(Fluoranthene+Pyrene), reflecting the characteristics of coal combustion. The Carbon number Preference Index (CPI) values of n-alkanes which ranged from 0.9 to 1.3 also showed the characteristics of coal combustion.

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