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http://dx.doi.org/10.5572/KOSAE.2015.31.2.143

Long-term Trends of the Concentrations of Mass and Chemical Composition in PM2.5 over Seoul  

Han, Sang Hee (Department of Environmental Science and Engineering, Ewha Womans University)
Kim, Yong Pyo (Department of Environmental Science and Engineering, Ewha Womans University)
Publication Information
Journal of Korean Society for Atmospheric Environment / v.31, no.2, 2015 , pp. 143-156 More about this Journal
Abstract
The literature data of the mass concentrations of TSP, $PM_{10}$, and $PM_{2.5}$, and chemical composition of $PM_{2.5}$ (sulfate, nitrate, ammonium, OC, and EC) from 1985 and 2013 at Seoul were collected and the temporal trends were discussed in relation with the policy directions. Generally, the mass concentrations of TSP, $PM_{10}$, and $PM_{2.5}$ at Seoul have showed decreasing trends. However, it is not clear what might be the major reason(s) for the trends. The concentrations of ionic component in $PM_{2.5}$ showed different trends, sulfate being reduced during the 1990s but no trend during the 2000s. The concentrations of nitrate and ammonium were increasing during the 2000s. The concentrations of OC show no apparent trend while that of EC decreased. Further policy directions are suggested based on the temporal trends of the chemical composition in $PM_{2.5}$.
Keywords
Seoul; $PM_{2.5}$; Chemical composition; Temporal trends; Policy directions;
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