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Journal of the Korean Society for Environmental Analysis 2018;21(2):61-70.
Chemical Composition and Source Apportionment of PM2.5 in Jeju City in 2017
2017년 제주시 대기 중 PM2.5의 화학적 조성과 오염원 추정
김수미1, 김길성2, 현성수1, 김정하2, 김명찬1, 김봉진1, 이기호3
1제주특별자치도 보건환경연구원
2제주특별자치도보건환경연구원
3제주대학교
Abstract
In this study, to characterize chemical compositions and identify the sources of PM2.5 in the urban area of Jeju, Korea, PM2.5-bound concentrations of 8 ionic species and 12 elements were measured from samples collected at the downtown area from January to December 2017. Positive matrix factorization (PMF) was applied to these PM2.5 data-sets to identify the diverse sources in Jeju City. The average PM2.5 mass concentration for the study period was 18.31±9.72 µg/m3. The contributions of water-soluble ionic species, elements and unknown components to PM2.5 mass were 55.8%, 2.1%, and 42.0%, respectively. PMF analysis showed that a total of six source types were identified to be important. These sources are the industry related source, secondary sulfate and oil combustion, soil, biomass burning and vehicles, secondary nitrate, and sea salt.
Key Words: PM2.5, Jeju, Water-soluble ionic species, Elements, PMF
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