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  • P-ISSN 1225-0163
  • E-ISSN 2288-8985

Composition and pollution characteristics of TSP, PM2.5 atmospheric aerosols at Gosan site, Jeju Island

Analytical Science and Technology / Analytical Science and Technology, (P)1225-0163; (E)2288-8985
2010, v.23 no.4, pp.371-382
https://doi.org/10.5806/AST.2010.23.4.371







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Abstract

TSP and PM2.5 atmospheric aerosols have been collected at Gosan site of Jeju Island, and their compositions were analyzed to understand the pollution characteristics. The composition ratios of nss (non-sea salt)-SO42− and NH4+ were higher in Gosan site than those in other Korean background and urban sites. However the composition ratio of NO3− was conversely lower in Gosan site. From the study of aerosol components according to particle sizes, the anthropogenic nss-SO42−, NO3− and NH4+ components were mostly existed in the fine particles. But the nss-Ca2+, Na+, Cl− and Mg2+ originated from soil and marine sources were distributed relatively in the coarse particles. In the seasonal comparison, the concentrations of nss-Ca2+, Al, Fe, Ca and NO3− increased in spring season, and nss-SO42− showed higher concentration in summer and spring seasons. Based on the factor analysis, the atmospheric aerosols in Gosan site have been found to be influenced largely by anthropogenic sources, and next by marine and soil sources. The backward trajectory analyses showed that the concentrations of nss-SO42−, NO3−, Pb and nss-Ca2+ increased when the air mass moved from Chinese continent to Jeju area. On the other hand, their concentrations decreased when the air mass moved in from the North Pacific Ocean.

keywords
atmospheric aerosols, TSP, PM2.5, aerosol composition, particle size, Gosan site


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