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Impact of Dust Transported from China on Air Quality in Korea -Characteristics of PM2.5 Concentrations and Metallic Elements in Asan and Seoul, Korea
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 Title & Authors
Impact of Dust Transported from China on Air Quality in Korea -Characteristics of PM2.5 Concentrations and Metallic Elements in Asan and Seoul, Korea
Yang, Won-Ho; Son, Bu-Soon; Breysse, Patrick; Chung, Tae-Woong;
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[ ], particulate matter less than 2.5 um in a diameter, can penetrate deeply into the lungs. Exposure to has been associated with increased hospital visits for respiratory aliments as well as increase mortality. is a byproduct of combustion processes and as such has a complex composition including a variety of metallic elements, inorganic and organic compounds as well as biogenic materials (microorganisms, proteins, etc). In this study, the average concentrations of fine particulates have been measured simultaneously in Asan and Seoul, Korea, by using particulate matter portable sampler from September 2001 to August 2002. Sample collection filters were analyzed by ICP-OES to determine the concentrations of metallic elements (As, Ni, Fe, Cr, Cd, Cu, Pb, Zn, Si). Annual mean concentrations in Asan and Seoul were 37.70 and , respectively. The highest concentrations of were found in spring season in both cities and the concentrations of measured metallic elements except As in Asan were higher than those in Seoul, suggesting that yellow dust in spring could affect concentrations in Asan rather than Seoul. The correlation coefficients of Pb and Zn were 0.343 for Asan and 0.813 for Seoul during non-yellow dust condition, suggesting that Pb and Zn were influenced with the same sources. The correlation coefficients between Si and Fe in the fine particulate mode were 0.999 (Asan) and 0.998 (Seoul) during yellow dust condition. It was suggested that these two elements were impacted by soil-related transport from China during the yellow dust storm condition.
fine particulate;yellow dust;metallic elements;
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