J Korean Soc Environ Anal Search


Journal of the Korean Society for Environmental Analysis 2014;17(3):161-172.
Possibility of the PM 10 and PM 2.5 Concentration Monitoring System using SMPS-APS Combination
SMPS-APS를 이용한 PM 10 및 PM 2.5 질량농도 모니터링 가능성 평가
박종성, 문광주, 박승명, 송인호, 김현재, 홍유덕, 한진석
The tandem monitoring system composed of Scanning Mobility Particle Sizer and Aerodynamic ParticleSizer (SMPS-APS) was simultaneously operated with other PM mass monitoring devices using β-ray absorptionmethod such as BAM 1020 at Seoul intensive monitoring site during over 3 months, 2010. The monitoringresults of SMPS-APS combination and β-ray absorption method show high correlation when the relativehumidity was between 40 % and 60 %. On the other hands, the correlation between two monitoring methodswas obviously low in high humidity due to the hygroscopic growth of particles. In addition, several Asian dustAD) and high PM episodes observed during the monitoring period seemed to make a difference to the monitoringresults. The SMPS-APS system underestimated the PM 10 mass concentration during AD periodsbecause the counting efficiency of APS decreases for the large particles (> 5 µm), whereas the overestimatingthe PM 2.5 mass for high PM episodes due to hygroscopic growth of fine aerosol and recounting the small particlesin the boundary size range of SMPS and APS was observed.
Key Words: Scanning mobility particle sizer, Aerodynamic particle sizer, PM 10, PM 2.5, Seoul intensive mon-itoring site
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