Journal of Korean Society for Atmospheric Environment (한국대기환경학회지)

Korean Society for Atmospheric Environment (한국대기환경학회)
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Ionic Compositions and Carbonaceous Matter of PM2.5 at Ieodo Ocean Research Station

이어도 해양과학기지 PM2.5의 이온과 탄소 조성 특성

  • Han, Jihyun (Department of Earth and Environmental Sciences, Korea University) ;
  • Kim, Jahan (Department of Earth and Environmental Sciences, Korea University) ;
  • Kang, Eunha (Suwon Research Institute) ;
  • Lee, Meehye (Department of Earth and Environmental Sciences, Korea University) ;
  • Shim, Jae-Seol (Korea Institute of Ocean Science and Technology)
  • 한지현 (고려대학교 이과대학 지구환경과학과) ;
  • 김자한 (고려대학교 이과대학 지구환경과학과) ;
  • 강은하 (수원시정연구원) ;
  • 이미혜 (고려대학교 이과대학 지구환경과학과) ;
  • 심재설 (한국해양과학기술원)
  • Received : 2013.03.09
  • Accepted : 2013.09.15
  • Published : 2013.12.31
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Abstract

The purpose of this study is to determine concentrations and compositions of $PM_{2.5}$ and their characteristic variations at Ieodo Ocean Research Station in the East China Sea and to examine the influence of air pollutants transported from Asia continents. $O_3$ and meteorological parameters were measured since June 2003 and $PM_{2.5}$ filter samples were collected from June 2004 to June 2008. In total, 244 samples were analyzed for water soluble ions and carbonaceous compounds. The mean mass concentration of $PM_{2.5}$ and $O_3$ were $21.8{\pm}14.9{\mu}g/m^3$ and $51.6{\pm}16.1$ ppb, respectively. The average concentrations (mass fractions) of sulfate and ammonium were $6.26{\mu}g/m^3$ (28.74%) and $1.59{\mu}g/m^3$ (7.31%), respectively. Nitrate was considered to be lost through evaporation due to long stay at the station. The mean concentrations of EC and OC were $1.01{\mu}g/m^3$ and $2.34{\mu}g/m^3$, respectively, from June 2006 to June 2008. The average OC/EC ratio was 2.31. The organic matter converted from OC by multiplying 2.1 and elemental carbon constituted 22.60% and 4.66% of $PM_{2.5}$ mass, respectively.

Keywords

References

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