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Characteristics of PM2.5 Carbonaceous Aerosol using PILS-TOC and GC/MS-TD in Seoul

PILS-TOC 및 GC/MS-TD를 이용한 서울시 대기 중 초미세먼지(PM2.5) 유기탄소의 특성 분석

  • Park, Da-Jeong (Mokpo National University, Department of Environmental Engineering) ;
  • Ahn, Joon-Young (National Institute of Environmental Research, Air Quality Research Division) ;
  • Shin, Hye-Jung (National Institute of Environmental Research, Air Quality Research Division) ;
  • Bae, Min-Suk (Mokpo National University, Department of Environmental Engineering)
  • 박다정 (국립목포대학교 환경공학과) ;
  • 안준영 (국립환경과학원 대기환경연구과) ;
  • 신혜정 (국립환경과학원 대기환경연구과) ;
  • 배민석 (국립목포대학교 환경공학과)
  • Received : 2014.09.02
  • Accepted : 2014.10.06
  • Published : 2014.10.31

Abstract

Continuous Water-Soluble Organic Carbons (WSOC) by the Particle Into Liquid Sampler - Total Organic Carbon (PILS-TOC) analyzer were measured at the Seoul intensive monitoring site from June 17 through July 5 in 2014. In addition, the 24 hour integrated PM2.5 collected by Teflon and Quartz filters were analyzed for water soluble ions by Ion chromatography (IC), WSOC by TOC from water extracts, organic carbon (OC), elemental carbon (EC) by carbon analyzer using the thermal optical transmittance (TOT) method, and mass fragment ions (m/z) related to alkanes and PAHs (Poly Aromatic Hydrocarbons) by Gas Chromatography-Mass Spectrometer-Thermal Desorption (GC/MS-TD). Based on the statistical analysis, four different Carbonaceous Thermal Distributions (CTDs) from OCEC thermal-gram were identified. This study discusses the primary and secondary sources of WSOC based on the Classified CTD, organic mass fragments, and diurnal patterns of WSOC. The results provide knowledge regarding the origins of WSOC and their behaviors.

Acknowledgement

Supported by : 한국연구재단

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