Size Distribution Characteristics of Water-soluble Ionic Components in Airborne Particulate Matter in Busan

부산 도심지역 대기중 입자상물질의 크기분포에 따른 수용성 이온성분의 특성

  • Park, Gee-hyeong (Busan Metropolitan City Institute of Health and Environment) ;
  • Lee, Byeong-kyu (Department of Civil and Environmental Engineering, University of Ulsan)
  • 박기형 (부산광역시 보건환경연구원) ;
  • 이병규 (울산대학교 건설환경공학부)
  • Received : 2015.04.07
  • Accepted : 2015.06.25
  • Published : 2015.06.30


This study was conducted to investigate size distribution characteristics of water-soluble ionic components in the airborne particulate matter (PM) collected from an urban area in Busan using a MOUDI cascade impactor from March to October 2010. The inorganic constituents in the fine particles (${\leq}1.8{\mu}m$) predominantly consisted of sulfate, nitrate, ammonium, and potassium. Sulfate and ammonium concentrations showed a high correlation and similar equivalent concentrations in the fine modes including $0.18{\sim}0.32{\mu}m$, $0.32{\sim}0.56{\mu}m$, and $0.56{\sim}1.0{\mu}m$. This indicates that the main chemical component in the fine particles would be forms of ammonium sulfate such as $(NH_4)_3H(SO_4)_2$, $(NH_4)_2SO_4$, and $(NH_4)HSO_4$. Back trajectory analysis showed that relatively higher concentrations of ammonium, nitrate, and sulfate in the fine mode, compared to the coarse mode, are caused both by domestic sources and long-range transports originated from China continent. High concentration episodes of PM both in the fine mode and the coarse mode were attributed both by anthropogenic sources, such as ship emissions and traffic emissions, and by natural sources such as seawater (sea salt), respectively.


Grant : 울산 친환경 생태산업단지 사업팀


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