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Comparison of the Real-time Measurements for PM2.5 and Quality Control Method

PM2.5 자동측정장비 비교 및 정도관리 방안

  • Park, Mikyung (Department of air Quality Research, Climate and Air Quality Research Division, National Institute of Environmental Research) ;
  • Park, Jin Su (Department of air Quality Research, Climate and Air Quality Research Division, National Institute of Environmental Research) ;
  • Jo, Mira (Department of air Quality Research, Climate and Air Quality Research Division, National Institute of Environmental Research) ;
  • Lee, Yong Hwan (Department of air Quality Research, Climate and Air Quality Research Division, National Institute of Environmental Research) ;
  • Kim, Hyun Jae (Department of air Quality Research, Climate and Air Quality Research Division, National Institute of Environmental Research) ;
  • Oh, Jun (Department of air Quality Research, Climate and Air Quality Research Division, National Institute of Environmental Research) ;
  • Choi, Jin Soo (Department of air Quality Research, Climate and Air Quality Research Division, National Institute of Environmental Research) ;
  • Ahn, Joon Young (Department of air Quality Research, Climate and Air Quality Research Division, National Institute of Environmental Research) ;
  • Hong, You Deog (Department of air Quality Research, Climate and Air Quality Research Division, National Institute of Environmental Research)
  • 박미경 (국립환경과학원 기후대기연구부 대기환경연구과) ;
  • 박진수 (국립환경과학원 기후대기연구부 대기환경연구과) ;
  • 조미라 (국립환경과학원 기후대기연구부 대기환경연구과) ;
  • 이용환 (국립환경과학원 기후대기연구부 대기환경연구과) ;
  • 김현재 (국립환경과학원 기후대기연구부 대기환경연구과) ;
  • 오준 (국립환경과학원 기후대기연구부 대기환경연구과) ;
  • 최진수 (국립환경과학원 기후대기연구부 대기환경연구과) ;
  • 안준영 (국립환경과학원 기후대기연구부 대기환경연구과) ;
  • 홍유덕 (국립환경과학원 기후대기연구부 대기환경연구과)
  • Received : 2017.03.17
  • Accepted : 2017.11.12
  • Published : 2017.12.31

Abstract

Measurements using five real-time particle samplers were compared to measurements using three NRM (National Reference Method system) filter-based samplers(Gravimetric method) at Incheon, Korea, between May and August, 2014. The purpose of this study was to suggest the quality assurance/quality control (QA/QC) method of each instrument for use in a real-time continuous particle sampler to measure the mass of airborne particles with an aerodynamic diameter less than $2.5{\mu}m$ ($PM_{2.5}$). Five real-time particle samplers of BAM1020, FH62C_14, TEOM, PM-711 and SPM-613 were evaluated by comparing its measured 23 hr average $PM_{2.5}$ concentrations with those measured with NRM filter-based samplers simultaneously. The parameters(e.g. Inlet heating condition, Slope factor, Film response, Intercept, Background, Span value) of the real-time samplers were optimized respectively by conducting test performance evaluation during 7 days in field sampling. For example, inlet heating temperature of TEOM sampler controls $35{\sim}40^{\circ}C$ to minimize the fluctuation of the real-time measurement data and background value of BAM1020 is the key factor affecting the accuracy of $PM_{2.5}$ mass concentration. We classified the $PM_{2.5}$ concentration according to relative humidity (80%) to identify water absorbed in aerosols by measuring the ${\beta}$-ray samplers(BAM1020, FH62C_14) and TEOM. ${\beta}$-ray samplers were not strongly affected by relative humidity that the difference of the average $PM_{2.5}$ concentration was about 5%. On the other hand, The TEOM sampler overestimated $PM_{2.5}$ mass concentration about 15% at low relative humidity (<80%).

Keywords

References

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