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Characteristics of Ambient Particulate Matter in Gwangju
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 Title & Authors
Characteristics of Ambient Particulate Matter in Gwangju
Seo, Gwang-Yeob; Kim, Seung-Ho; Lee, Kyoung-Seok; Min, Kyoung-Woo; Seo, Hee-Jeong; Kang, Yeong-Ju; Paik, Ke-Jin; Moon, Young-Woon; Shin, Dae-Yewn;
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In this study, ambient particulate matter ( and ) levels were measured and their chemical and physical properties were characterized. Two sites in Gwangju were sampled once a month from December 2008 to November 2009. The annual mean concentrations of and were and , respectively, in Nongseongdong and and , respectively, in Duam-dong. levels were 1.8 times higher than the USA Environmental Protection Agency (EPA) national ambient air quality standard for (). The average ratio of 0.58 suggested that is a significant component of the ambient particle pollution. The order of concentration of metallic elements in and was Si > Al > Fe > Zn > Pb > Cu > Mn. Cd was not detected. The earth crustal enrichment factors for Cr, Cu, Pb and Zn in were higher than those in . When the earth crustal enrichment factors for Cr, Cu, Pb and Zn were higher than 10, this suggested influence from anthropogenic sources. The soil contribution ratios for and were 11.3% and 16.4%, respectively, and were higher in the fall and winter. Anions (, , and ) comprise 28.7% of and 21.4% of . The correlation coefficient of Zn-Fe, Mn-Cu, Fe-Cu and Fe-Mn in was high in the sampling sites, and metallic elements were primarily from anthropogenic sources such as fuel combustion and vehicle emissions.
;;crustal enrichment factor;soil contribution ratio;metallic element;anion;
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