Journal of Korean Society for Atmospheric Environment (한국대기환경학회지)

Korean Society for Atmospheric Environment (한국대기환경학회)
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A Study of Carbonaceous Aerosols Measurement in Metropolitan Area Performed during KORUS-AQ 2016 Campaign

수도권 지역의 탄소 성분 에어로졸 측정 연구: KORUS-AQ 2016 캠페인 기간을 중심으로

  • Jeong, Byeongju (Department of Mechanical Engineering, Graduate School of Korea University of Technology and Education (Current address, Air Pollutant Emission-Cap Team, Korea Environment Corporation)) ;
  • Bae, Min-Suk (Department of Environmental Engineering, Mokpo National University) ;
  • Ahn, Junyeong (Air Quality Research Division, National Institute of Environmental Research) ;
  • Lee, Jeonghoon (Department of Mechanical Engineering, Graduate School of Korea University of Technology and Education (Current address, Air Pollutant Emission-Cap Team, Korea Environment Corporation))
  • 정병주 (한국기술교육대학교 대학원 기계공학과) ;
  • 배민석 (국립목포대학교 환경공학과) ;
  • 안준영 (국립환경과학원 대기환경연구과) ;
  • 이정훈 (한국기술교육대학교 대학원 기계공학과)
  • Received : 2016.11.25
  • Accepted : 2017.01.20
  • Published : 2017.06.30
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Abstract

Carbonaceous aerosols such as the equivalent black carbon (eBC), the elemental carbon (EC) and the organic carbon (OC) were monitored at the Seoul Olympic Park site ($37.521^{\circ}N$, $127.124^{\circ}E$) during the KORUS-AQ 2016 campaign using a Multi Angle Absorption Photometer (MAAP) and an OCEC Analyzer. Averaged mass concentrations of eBC, EC and OC were presented as $2.46{\pm}1.52{\mu}g/m^3$, $1.01{\pm}0.60{\mu}g/m^3$ and $4.85{\pm}2.60{\mu}g/m^3$, respectively. OC/EC ratio and mass absorption cross-section (MAC) of light absorbing aerosols were calculated as 2.32 and $14.8m^2/g$, respectively. Diesel OC concentrations were estimated from a source profile of diesel vehicles as well. eBC mass concentrations measured from May $26^{th}$ to May $27^{th}$, 2016 showed 40% higher than averaged eBC mass concentrations during campaign period. $PM_{2.5}$ concentrations measured in this period were also higher than average $PM_{2.5}$ concentrations. High eBC concentrations were observed from May $29^{th}$ to May $31^{st}$, 2016 and from June $9^{th}$ to June $11^{th}$, 2016, possibly due to morning rush hour and the effect of temperature inversion at night. Diurnal variations of eBC, EC and Diesel OC showed a typical pattern of metropolitan area. In the weekend, however, diurnal variations of eBC, EC and Diesel OC mass concentrations were different from those measured in the weekday. It is expected that this study can help to understand the relationship between carbonaceous aerosols in a metropolitan area.

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References

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