Particle and aerosol research (한국입자에어로졸학회지)

Korean Association for Particle and Aerosol Research (한국입자에어로졸학회)
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Quality Assurance and Quality Control method for Volatile Organic Compounds measured in the Photochemical Assessment Monitoring Station

광화학측정망에서 측정한 휘발성유기화합물의 정도관리 방법

  • Shin, Hye-Jung (Department of Environmental Science and Engineering, Ewha Womans University) ;
  • Kim, Jong-Choon (Atmospheric Research Division, National Institute of Environmental Research) ;
  • Kim, Yong-Pyo (Department of Environmental Science and Engineering, Ewha Womans University)
  • 신혜정 (이화여자대학교 환경공학과) ;
  • 김종춘 (국립환경과학원 대기환경연구과) ;
  • 김용표 (이화여자대학교 환경공학과)
  • Received : 2011.03.23
  • Accepted : 2011.04.02
  • Published : 2011.03.31
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Abstract

The hourly volatile organic compounds(VOCs) concentrations between 2005 and 2008 at Bulgwang photochemical assessment monitoring station were investigated to establish a method for quality assurance and quality control(QA/QC) procedure. Systematic error, erratic error, and random error, which was manifested by outlier and highly fluctuated data, were checked and removed. About 17.3% of the raw data were excluded according to the proposed QA/QC procedure. After QA/QC, relative standard deviation for representing 15 species concentrations decreased from 94.7-548.0% to 63.4-125.8%, implying the QA/QC procedure is proper. For further evaluation about the adequacy of QA/QC procedure, principal components analysis(PCA) was carried out. When the data after QA/QC procedure was used for PCA, the extracted principal components were different from the result from the raw data and could logically explain the major emission sources(gasoline vapor, vehicle exhaust, and solvent usage). The QA/QC procedure based on the concept of errors is inferred to proper to be applied on VOCs. However, an additional QA/QC step considering the relationship between species in the atmosphere needs to be further considered.

Keywords

References

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