| 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 |
2022-07-20 |
| タイトル |
|
|
タイトル |
Transboundary and Local Air Pollutants in Western Japan Distinguished on the Basis of Ratios of Metallic Elements in Size-Segregated Aerosols |
|
言語 |
en |
| 作成者 |
Taniguchi, Yuta
Shimada, Kojiro
Takami, Akinori
Lin, Neng-Huei
Chan, K. Chak
Kim, Pyo Yong
Hatakeyama, Shiro
|
| 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 |
© Taiwan Association for Aerosol Research |
| 権利情報 |
|
|
言語 |
en |
|
権利情報Resource |
https://creativecommons.org/licenses/by/4.0/ |
|
権利情報 |
the Creative Commons Attribution 4.0 License (CC BY 4.0) |
| 主題 |
|
|
言語 |
en |
|
主題Scheme |
Other |
|
主題 |
Size-segregated aerosol analysis |
| 主題 |
|
|
言語 |
en |
|
主題Scheme |
Other |
|
主題 |
Chemical composition of metallic elements |
| 主題 |
|
|
言語 |
en |
|
主題Scheme |
Other |
|
主題 |
Difference in transboundary and local pollution |
| 主題 |
|
|
言語 |
en |
|
主題Scheme |
Other |
|
主題 |
Elemental ratios |
| 内容記述 |
|
|
内容記述タイプ |
Abstract |
|
内容記述 |
Trace metals in aerosols were observed at an urban site (Kumamoto, Kyushu, Japan) and a rural site (Cape Hedo, Okinawa, Japan) to investigate the relative contributions of transboundary air pollutants from mainland Asia and local air pollutants in western Japan. We used a cascade impactor to collect aerosols in five size classes. We apportioned the sources of the air masses on the basis of elemental components. Transboundary and local air pollutants were distinguished by use of the Pb/Cu and V/As ratios in selected size fractions of aerosols. The contribution of Pb (primarily from coal combustion in China) to total anthropogenic elements was greatest in spring, autumn, and winter in the 0.5-1 µm size fraction at both collection sites. The atmospheric environment at both sites was affected by this transboundary air pollutant. The contribution of Cu (primarily from local vehicle traffic) to total anthropogenic elements was greatest in all seasons in the 2.5-10 µm fraction at Kumamoto. Local air pollutants such as road dust, automobile brake abrasion, and waste incineration affected ambient air quality in Kumamoto. Because these pollutants resided mainly in the coarse aerosol fraction (> 2.5 µm), most of them were not transported to Cape Hedo in air bodies that we were able to trace to Kumamoto by backward projection. Based on our data the ambient air quality at Cape Hedo was little affected by local air pollutants emitted in the Kumamoto area. |
|
言語 |
en |
| 出版者 |
|
|
出版者 |
Taiwan Association for Aerosol Research |
|
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/10.4209/aaqr.2016.12.0578 |
| 収録物識別子 |
|
|
収録物識別子タイプ |
PISSN |
|
収録物識別子 |
1680-8584 |
| 収録物識別子 |
|
|
収録物識別子タイプ |
EISSN |
|
収録物識別子 |
2071-1409 |
| 収録物名 |
|
|
収録物名 |
Aerosol and Air Quality Research |
|
言語 |
en |
| 書誌情報 |
巻 17,
号 12,
p. 3141-3150,
発行日 2017-12
|
aaqr-16-12-lrt-0578.pdf (645 KB)
