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http://dx.doi.org/10.5572/KOSAE.2016.32.1.100

Characteristics of Fine Particles Measured in Two Different Functional Areas and Identification of Factors Enhancing Their Concentrations  

Cho, Sung-Hwan (Department of Environmental Science, College of Natural Science, Kangwon National University)
Kim, Hyun-Woong (Department of Environmental Science, College of Natural Science, Kangwon National University)
Han, Young-Ji (Department of Environmental Science, College of Natural Science, Kangwon National University)
Kim, Woo-Jin (Environmental Health Center, Kangwon National University Hospital, Kangwon National University School of Medicine)
Publication Information
Journal of Korean Society for Atmospheric Environment / v.32, no.1, 2016 , pp. 100-113 More about this Journal
Abstract
In this study, the characteristics of $PM_{2.5}$ and $PM_{2.5-10}$ concentrations were identified in two different functional areas including Chuncheon and Youngwol, Korea. Even though the anthropogenic emission rates of $PM_{2.5}$ and $PM_{10}$ are approximately four times higher in Youngwol than in Chuncheon their atmospheric concentrations were statistically higher in Chuncheon. In Chuncheon, both $PM_{2.5}$ concentrations and the ratio of $PM_{2.5}/PM_{10}$ increased as relative humidity (RH) increased possibly because the inorganic and/or organic secondary aerosols were actively formed at high RH. This result was also supported by that $PM_{2.5}$ concentration was enhanced under the fog and mist conditions in Chuncheon. On the other hand, both $PM_{2.5}$ and $PM_{2.5-10}$ concentrations clearly increased with the southerly winds blown from the cement production facility in Youngwol. In addition, high $PM_{2.5-10}$ concentrations were observed with high wind speed, low relative humidity, and high $NO_2$ concentrations in Youngwol, suggesting that $PM_{2.5-10}$ was generated through the physical process including crushing and packing procedures followed by resuspension from cement and lime factory.
Keywords
$PM_{2.5}$; $PM_{10}$; Relative humidity; Wind speed; Cement production; Secondary aerosol;
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