Journal of Korean Society for Atmospheric Environment (한국대기환경학회지)

Korean Society for Atmospheric Environment (한국대기환경학회)
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Comparison of PM2.5 Concentrations by Measurement Method

측정 방법에 따른 PM2.5 농도 비교

  • Ghim, Young Sung (Department of Environmental Science, Hankuk University of Foreign Studies) ;
  • Choi, Yongjoo (Department of Environmental Science, Hankuk University of Foreign Studies) ;
  • Park, Jisoo (Department of Environmental Science, Hankuk University of Foreign Studies) ;
  • Kim, Pilho (Department of Environmental Science, Hankuk University of Foreign Studies) ;
  • Han, Yu Kyung (Department of Environmental Science, Hankuk University of Foreign Studies)
  • 김영성 (한국외국어대학교 환경학과) ;
  • 최용주 (한국외국어대학교 환경학과) ;
  • 박지수 (한국외국어대학교 환경학과) ;
  • 김필호 (한국외국어대학교 환경학과) ;
  • 한유경 (한국외국어대학교 환경학과)
  • Received : 2017.08.07
  • Accepted : 2017.09.25
  • Published : 2017.10.31
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Abstract

$PM_{2.5}$ concentrations were measured using a cyclone, impactor (the U.S. Environmental Protection Agency well impactor ninety-six, WINS) and optical particle counter (OPC) at a campus site located in Yongin for the period August 2014 through March 2017. The concentrations from cyclone (Y) were generally higher than those from impactor(X); the best-fit line was Y=1.22X+5.64. The ratios of $PM_{2.5}/PM_{10}$ ranged from 0.61 to 0.66 when $PM_{2.5}$ concentrations from cyclones in selected studies were converted into those from impactors using a regression equation in this study. The slope of the best-fit line between OPC and impactor was close to 1 at 0.95, while that between OPC and cyclone was 0.72. After sampling, the flow rate in the low-volume air sampler with cyclone decreased by 3% on average, which did not have a significant effect on measured concentrations.

Keywords

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