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KMID : 0382420010270040063
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Korean Journal of Environmental Health Society
2001 Volume.27 No. 4 p.63 ~ p.71
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Chemical characteristics of ions and trace metallic element of PM_2.5 in Busan metropolitan area
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Jeon Bo-Kyung
Suh Jeong-Min
Choi Kum-Chan
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Abstract
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PM2.5 samples were measured at two sites, Hadan (suburban site) and Anrak (roadside site) in Busan area. PM2.5 sampling was performed for 24-hour intervals by the FH95 particulate sampler. Aerosol samples were collected on PTFE filter. A total of 60 particulate samples were collected, and samples were measured for particulate mass concentration, metallic elements (Cr, Mn, Ni, Cu, Se, Fe, Pb, and Zn) and water-soluble elements (CI^-, NO_3^-, SO_4^2-, NH_4^+, Na^+, Ca_2^+, Mg_2^+ and K^+). Mass concentration in Hadan ranged 24.23∼57.12 ㎍/㎥ and 60.22∼72.12㎍/㎥ in Yellow Sand Events. Major cations in Hadan and Anrak site is NH_4^+and Na^+ respectively. SO42- was the most abundant specie in the PM2.5 fraction for Hadan site and Anrak site. Hadan site showed higher concentrations in SO_4^2- and NH_4^+. In Anrak site, the concentration of SO_4^2- and Na^+ was higher than other ions. Prominent metallic elements were Fe and Pb in two sites. Principal component analysis showed that main source of PM2.5 aerosol particles was non-metal related source which was resulted in relating elements as Cr, Ni, and Pb at Hadan site. Anrak site also has resulted PM2.5 aerosol particles source, which was related its element like Zn, and Ni. The SAS package analysis also showed that long-range transport effect at Hadan area due to Yellow Sand Event by the prevailing westerlies.
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