충주시 미세입자 (PM2.5) 농도특성에 대한 사례 연구 (Analysis of PM2.5 Case Study Burden at Chungju City)

서지정보

· 발행기관 : 한국대기환경학회
· 수록지 정보 : 한국대기환경학회지 / 28권 / 5호 / 595 ~ 605페이지
· 저자명 : 이성희, 강병욱, 연익준, 최준락, 박현필, 박상찬, 이학성, 조병렬

초록

Fine particles (PM2.5) were collected and analyzed from April 2010 through January 2011 in Chungju to investigate the characteristics of PM2.5 and its ionic species. The annual mean concentrations of PM2.5, SO42-, NO3-, and NH4+in the particulate phase were 40.84, 7.61, 7.14 and 3.74 μg/m3, respectively. PM2.5 concentrations were higher in fall and spring than in winter and summer. The elevated concentrations episodes are the main factor that enhanced the PM2.5 concentrations in the fall. Among the major ionic species SO42- showed the highest concentration, followed by NO3- and NH4+, NO3- exhibited higher concentrations during the winter, but SO42- and NH4+ were not showed seasonal variation. The high correlations were found among PM2.5, SO42-, NO3- and NH4+ during all seasons except for spring. The evaluation of backward trajectories and meteorological records show that the highest PM2.5 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 PM2.5 mass concentrations arouse the concentration of NO3-,but no effects on SO42- and NH4+.

영어초록

Fine particles (PM2.5) were collected and analyzed from April 2010 through January 2011 in Chungju to investigate the characteristics of PM2.5 and its ionic species. The annual mean concentrations of PM2.5, SO42-, NO3-, and NH4+in the particulate phase were 40.84, 7.61, 7.14 and 3.74 μg/m3, respectively. PM2.5 concentrations were higher in fall and spring than in winter and summer. The elevated concentrations episodes are the main factor that enhanced the PM2.5 concentrations in the fall. Among the major ionic species SO42- showed the highest concentration, followed by NO3- and NH4+, NO3- exhibited higher concentrations during the winter, but SO42- and NH4+ were not showed seasonal variation. The high correlations were found among PM2.5, SO42-, NO3- and NH4+ during all seasons except for spring. The evaluation of backward trajectories and meteorological records show that the highest PM2.5 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 PM2.5 mass concentrations arouse the concentration of NO3-,but no effects on SO42- and NH4+.

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