Journal of Korean Society for Atmospheric Environment (한국대기환경학회지)

Korean Society for Atmospheric Environment (한국대기환경학회)
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Analysis of PM2.5 Case Study Burden at Chungju City

충주시 미세입자 (PM2.5) 농도특성에 대한 사례 연구

  • Lee, Sung-Hee (Department of Environmental Engineering, Korea National University of Transportation) ;
  • Kang, Byung-Wook (Department of Environmental Engineering, Korea National University of Transportation) ;
  • Yeon, Ik-Jun (Department of Environmental Engineering, Korea National University of Transportation) ;
  • Choi, Jun-Rack (Department of Environmental Engineering, Korea National University of Transportation) ;
  • Park, Hyun-Pill (Department of Environmental Engineering, Korea National University of Transportation) ;
  • Park, Sang-Chan (Department of Environmental, Civil and Information System, Seowon University) ;
  • Lee, Hak Sung (Department of Environmental, Civil and Information System, Seowon University) ;
  • Cho, Byung-Yeol (Department of Environmental Engineering, Korea National University of Transportation)
  • 이성희 (한국교통대학교 환경공학과) ;
  • 강병욱 (한국교통대학교 환경공학과) ;
  • 연익준 (한국교통대학교 환경공학과) ;
  • 최준락 (한국교통대학교 환경공학과) ;
  • 박현필 (한국교통대학교 환경공학과) ;
  • 박상찬 (서원대학교 환경건설정보학과) ;
  • 이학성 (서원대학교 환경건설정보학과) ;
  • 조병렬 (한국교통대학교 환경공학과)
  • Received : 2012.07.11
  • Accepted : 2012.09.27
  • Published : 2012.10.31
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Abstract

Fine particles ($PM_{2.5}$) were collected and analyzed from April 2010 through January 2011 in Chungju to investigate the characteristics of $PM_{2.5}$ and its ionic species. The annual mean concentrations of $PM_{2.5}$, ${SO_4}^{2-}$, $NO_3{^-}$, and $NH_4{^+}$ in the particulate phase were 40.84, 7.61, 7.14 and $3.74{\mu}g/m^3$, respectively. $PM_{2.5}$ concentrations were higher in fall and spring than in winter and summer. The elevated concentrations episodes are the main factor that enhanced the $PM_{2.5}$ concentrations in the fall. Among the major ionic species ${SO_4}^{2-}$ showed the highest concentration, followed by $NO_3{^-}$ and $NH_4{^+}$, $NO_3^-$ exhibited higher concentrations during the winter, but ${SO_4}^{2-}$ and $NH_4{^+}$ were not showed seasonal variation. The high correlations were found among $PM_{2.5}$, ${SO_4}^{2-}$, $NO_3{^-}$ and $NH_4{^+}$ during all seasons except for spring. The evaluation of backward trajectories and meteorological records show that the highest $PM_{2.5}$ concentration levels occurred during W-NW weather conditions, which influenced by the emission sources of China area. The low pollution levels generally occurred during E-S weather conditions, which influenced by the East Sea and south of the Yellow Sea. The elevated $PM_{2.5}$ mass concentrations arouse the concentration of $NO_3{^-}$, but no effects on ${SO_4}^{2-}$ and $NH_4{^+}$.

Keywords

References

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