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KMID : 1024520140230050819
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Journal of the Environmental Sciences
2014 Volume.23 No. 5 p.819 ~ p.827
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Characteristics of Metallic and Ionic Concentrations in PM10 and PM2.5 in Busan
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Jeon Byung-Il
Hwang Yong-Sik
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Abstract
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This study analyzes the chemical composition of metallic elements and water-soluble ions in PM10 and PM2.5. PM10 and
PM2.5 concentrations in Busan during 2010-2012 were 97.2±67.5 and 67.5±32.8 ㎍/㎥, respectively, and the mean PM2.5/PM10 concentration ratio was 0.73. The contribution rate of water-soluble ions to PM10 ranged from 29.0% to 58.6%(a mean of 38.6%) and that to PM2.5 ranged from 33.9% to 58.4%(a mean of 43.1%). The contribution rate of sea salt to PM10 was 13.9% for 2011 and 9.7% for 2012, while that to PM2.5 was 17.4% for 2011 and 10.1% for 2012. PM10 concentration during Asian dust events was 334.3 ㎍/㎥ and 113.3 ㎍/㎥ during non-Asian dust events, and the PM10 concentration ratio of Asian Dust/Non Asian dust was 2.95. On the other hand, the PM2.5 concentration in Asian dust was 157.4 ㎍/㎥ and 83.2㎍/㎥ in Non Asian dust, and the PM2.5 concentration ratio of Asian Dust/Non Asian dust was 1.89, which was lower than that of PM10.
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KEYWORD
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PM10 and PM2.5 concentration, PM2.5/PM10 ratio, Metallic elements, Water-soluble ions, Asian Dust
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