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http://dx.doi.org/10.5762/KAIS.2012.13.1.445

Characterization of Annual PM2.5 and PM10 Concentrations by Real-time Measurements in Cheonan, Chungnam  

Heo, Jung-Hyuk (Department of Environmental Engineering, Sangmyung University)
Oh, Se-Won (Department of Environmental Engineering, Sangmyung University)
Publication Information
Journal of the Korea Academia-Industrial cooperation Society / v.13, no.1, 2012 , pp. 445-450 More about this Journal
Abstract
From 2015, PM2.5 standards will be added to Korean national ambient air quality standards. To characterize PM2.5 levels in Cheonan, annual PM2.5 concentrations along with PM10 concentrations were investigated between February 2010 and January 2011 using a dust monitor. The annual PM2.5 concentration was $40.45{\mu}g/m^3$ and over the standards($25{\mu}g/m^3$). The daily average PM2.5 concentrations ranged from 2.43 to $178.84{\mu}g/m^3$, and 26% days exceeded the daily PM2.5 standard($50{\mu}g/m^3$). During the same periods, only 11% days exceeded the daily PM10 standard, showing that PM2.5 were more concerning levels than PM10. Seasonal variations showed the highest concentrations in spring and winter, and lowest concentration in summer due to heavy rain fall. Changes in PM2.5 concentrations during the day were remarkable and showed the highest concentrations in commuting periods. The results indicated that the concentrations of PM2.5 in Cheonan were at the concerning level, and mainly from the mobile sources.
Keywords
PM2.5; PM10; Dust monitor; Cheonan;
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