| Item type |
琉球大学リポジトリ登録用アイテムタイプ(1) |
| 公開日 |
2022-07-19 |
| タイトル |
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|
タイトル |
Seasonal and annual changes in PAH concentrations in a remote site in the Pacifc Ocean |
|
言語 |
en |
| 作成者 |
Miura, Kaori
Shimada, Kojiro
Sugiyama, Taichi
Sato, Kei
Takami, Akinori
Chan, K. Chak
Kim, Sun In
Kim, Pyo Yong
Lin, Neng-Huei
Hatakeyama, Shiro
|
| アクセス権 |
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|
アクセス権 |
open access |
|
アクセス権URI |
http://purl.org/coar/access_right/c_abf2 |
| 権利情報 |
|
|
言語 |
en |
|
権利情報 |
© The Author(s) 2019 |
| 権利情報 |
|
|
言語 |
en |
|
権利情報Resource |
http://creativecommons.org/licenses/by/4.0/ |
|
権利情報 |
Creative Commons Attribution 4.0 International License |
| 内容記述 |
|
|
内容記述タイプ |
Abstract |
|
内容記述 |
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 Pacifc 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. |
|
言語 |
en |
| 出版者 |
|
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出版者 |
Springer Nature |
|
言語 |
en |
| 言語 |
|
|
言語 |
eng |
| 資源タイプ |
|
|
資源タイプ識別子 |
http://purl.org/coar/resource_type/c_6501 |
|
資源タイプ |
journal article |
| 出版タイプ |
|
|
出版タイプ |
VoR |
|
出版タイプResource |
http://purl.org/coar/version/c_970fb48d4fbd8a85 |
| 関連情報 |
|
|
|
識別子タイプ |
DOI |
|
|
関連識別子 |
https://doi.org/10.1038/s41598-019-47409-9 |
| 収録物識別子 |
|
|
収録物識別子タイプ |
EISSN |
|
収録物識別子 |
2045-2322 |
| 収録物名 |
|
|
収録物名 |
Scientific Reports |
|
言語 |
en |
| 書誌情報 |
巻 9,
号 1,
p. 12591,
発行日 2019-08-29
|
s41598-019-47409-9.pdf (2.5 MB)
