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The Metallic Composition of PM2.5 and PM10 in a Northeast Region of Seoul During the Spring 2001  

Choi, Gyoo-Hoon (Department of Geoinformation Sciences, Sejong University)
Kang, Chang-Hee (Department of Chemistry, Cheju National University)
Kim, Ki-Hyun (Department of Geoinformation Sciences, Sejong University)
Publication Information
Journal of the Korean earth science society / v.23, no.6, 2002 , pp. 514-525 More about this Journal
Abstract
The analysis of heavy metals associated with both PM2.5 and PM10 fraction of aerosols was made from a northeast region of Seoul during the spring period of 2001. The mean concentrations of fine (PM2.5), coarse (PM10-PM2.5), and PM10 fraction were observed as 49.3${\pm}$29.2, 50.5${\pm}$35.0, and 95.5${\pm}$46.1 ${\mu}g$/m$^3$, respectively during this study period. According to the results of enrichment factor (EF) analysis between different particle fractions, major elements (including Fe, Ca, Na, and K) were found to exhibit EF values of less than 10. However, heavy metal components (like Zn and Pb) showed very high EF values. Comparison of fine/coarse (F/C) concentration ratio showed that Zn, Cr, Pb, and Ni have higher ratio values than others. The metallic composition of particles was also compared on both absolute and relative terms. The results of our analysis showed an evidence that the increase in the total metallic contents is prominent during the spring period due mostly to the Asian Dust event.
Keywords
heavy metal; PM2.5; PM10; Coarse particle; Fine particle; Asian Dust;
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