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http://dx.doi.org/10.5572/KOSAE.2017.33.6.616

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

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)
Publication Information
Journal of Korean Society for Atmospheric Environment / v.33, no.6, 2017 , pp. 616-625 More about this Journal
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
$PM_{2.5}$ mass concentration; ${\beta}$-ray samplers; Gravimetric method; NRM (National Reference Method system); QA/QC(Quality Assurance/Quality Control);
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Times Cited By KSCI : 2  (Citation Analysis)
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