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Seasonal and annual changes in PAH concentrations in a remote site in the Pacific Ocean

Title
Seasonal and annual changes in PAH concentrations in a remote site in the Pacific Ocean
Authors
Miura, KaoriShimada, KojiroSugiyama, TaichiSato, KeiTakami, AkinoriChan, Chak K.Kim, In SunKim, Yong PyoLin, Neng-HueiHatakeyama, Shiro
Ewha Authors
김용표
SCOPUS Author ID
김용표scopus
Issue Date
2019
Journal Title
SCIENTIFIC REPORTS
ISSN
2045-2322JCR Link
Citation
SCIENTIFIC REPORTS vol. 9
Publisher
NATURE PUBLISHING GROUP
Indexed
SCI; SCIE; SCOPUS WOS scopus
Document Type
Article
Abstract
This paper reports the long term observation of particle-associated polycyclic aromatic hydrocarbons (PAHs) at Cape Hedo Atmosphere and Aerosol Monitoring Station, a remote site in the Western Pacific Ocean, from 2008 to 2015. This is the first long-term study that evaluated the contribution of long-range transport of PAHs in East Asia. No obvious trend (P > 0.05) was found in a particular season over the years. However, there are seasonal variations of PAH concentrations with higher in spring and winter. The higher PAH are attributed to air masses from the area including part of China. Source apportionment using three different approaches, i.e., PAH compositional pattern analysis, PAH diagnostic ratio analysis and positive matrix factorization modeling, showed the combined high contribution of biomass burning (18%, 14%) and coal combustion (33%, 24%) in spring and winter. In addition, the contribution of ship emissions (35%) was relatively high in spring, whereas that of vehicle emissions (36%) was relatively high in winter. The contribution of coal combustion to PAH has decreased throughout the years, likely due to changes in energy structure in China. The contribution of biomass burning to PAH has showed no trend, being stable, and that of vehicular emissions has increased.
DOI
10.1038/s41598-019-47409-9
Appears in Collections:
엘텍공과대학 > 화학신소재공학전공 > Journal papers
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