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KMID : 0385520140270040213
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Analytical Science & Technology
2014 Volume.27 No. 4 p.213 ~ p.222
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Compositions of haze aerosols and their variation by inflow pathway of air mass at Gosan site in Jeju Island during 2012-2013
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Hyeon Dong-Rim
Song Jung-Min
Kim Ki-Ju
Kim Won-Hyung
Kang Chang-Hee
Ko Hee-Jung
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Abstract
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The atmospheric aerosols of PM10 and PM2.5 were collected at Gosan site of Jeju Island during 2012-2013. Their ionic and elemental species were analyzed in order to examine the composition variation of the haze aerosols in accordance with the pathway of air mass. The concentrations of nss-SO4 2?, NO3?, and NH4+increased 2.1~3.7 times in coarse particle and 3.1~6.5 times in fine particle modes, respectively, showing especially high NO3? concentrations in fine particles during the haze days. The concentrations of S, Zn, Pb and K increased 3.0~5.6 times in coarse particles and 3.2~7.7 times in fine particles during the haze days, on the other hand Al, Fe, and Ca concentrations were high only in coarse particles. Due to the back trajectory analysis, the concentrations of nss-SO4 2? and NO3 ? for haze days were high when the inflow pathway of airmass was from China, especially a high increase of NO3? as through the south of China. The NO3?/nss-SO4 2?concentration ratio was relatively high in coarse mode as air mass inflow from China, but in fine mode itwas high as air mass passing through the Korean peninsula.
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KEYWORD
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haze, air mass inflow, PM10, PM2.5, Gosan site
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