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

http://hdl.handle.net/20.500.12000/0002019365
http://hdl.handle.net/20.500.12000/0002019365
86933e68-26fd-4566-a738-33afab44a7ca
名前 / ファイル ライセンス アクション
s41598-019-47409-9.pdf s41598-019-47409-9.pdf (2.5 MB)
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
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

× Miura, Kaori

en Miura, Kaori

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Shimada, Kojiro

× Shimada, Kojiro

en Shimada, Kojiro

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Sugiyama, Taichi

× Sugiyama, Taichi

en Sugiyama, Taichi

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Sato, Kei

× Sato, Kei

en Sato, Kei

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Takami, Akinori

× Takami, Akinori

en Takami, Akinori

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Chan, K. Chak

× Chan, K. Chak

en Chan, K. Chak

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Kim, Sun In

× Kim, Sun In

en Kim, Sun In

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Kim, Pyo Yong

× Kim, Pyo Yong

en Kim, Pyo Yong

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Lin, Neng-Huei

× Lin, Neng-Huei

en Lin, Neng-Huei

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Hatakeyama, Shiro

× Hatakeyama, Shiro

en Hatakeyama, Shiro

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アクセス権
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
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
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