| アイテムタイプ |
学術雑誌論文 / Journal Article(1) |
| 公開日 |
2025-07-08 |
| タイトル |
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|
タイトル |
Vibratory Sorting for Pumice Removal in Microplastic Analysis of Coastal Sediment |
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言語 |
en |
| 言語 |
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|
言語 |
eng |
| キーワード |
|
|
言語 |
en |
|
主題Scheme |
Other |
|
主題 |
microplastic |
| キーワード |
|
|
言語 |
en |
|
主題Scheme |
Other |
|
主題 |
pumice |
| キーワード |
|
|
言語 |
en |
|
主題Scheme |
Other |
|
主題 |
vibratory sorting |
| キーワード |
|
|
言語 |
en |
|
主題Scheme |
Other |
|
主題 |
Newton’s efficiency |
| 資源タイプ |
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資源タイプ識別子 |
http://purl.org/coar/resource_type/c_6501 |
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資源タイプ |
journal article |
| 著者 |
Yonaha, Yusuke
Nakagawa, Kei
Shimizu, Ken-ichi
Yagi, Mitsuharu
Ussawarujikulchai, Achara
Asakura, Hiroshi
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| 抄録 |
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内容記述タイプ |
Abstract |
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内容記述 |
Density separation using a wet method is the standard technique for extracting microplastics (MPs) from coastal sediments. However, the 2021 Japanese submarine volcanic eruption introduced substantial pumice into these sediments, complicating the process. Pumice contamination in the floating matter from density separation significantly increases the workload of visual sorting. Pumice, distinguished by its spherical shape and hardness, exhibits distinct rolling and bouncing behaviors compared to plastic. In this study, we evaluated the sorting efficiency of a vibratory sorter in separating pumice from floating matter, comparing its performance with the existing methods. We analyzed the progressive behavior and the virtual sorting efficiency of single large- and medium-diameter particles using a vibrating plate and the actual sorting efficiency of mixed large-diameter particles. The maximum Newton’s efficiencies (ηmax) for the virtual sorting of single large-diameter pumice and plastic ranged from 0.74 to 1.00, and for medium-diameter particles, from 0.74 to 0.97. Sorting efficiency decreased with finer particles. The ηmax for the actual sorting of mixed large-diameter pumice and plastic was between 0.68 and 1.00, lower than the virtual sorting efficiency. While vibratory sorting, based on Newton’s efficiency, does not replace visual sorting, the time required for vibratory sorting is 21% of that required for visual sorting, making it valuable for estimating approximate MP quantities in coastal sediments. Additionally, this study provides a practical method for beach cleanups. |
|
言語 |
en |
| 書誌情報 |
en : Microplastics
巻 4,
号 2,
p. art. no. 30,
発行日 2025-06-06
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| 出版者 |
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出版者 |
MDPI |
|
言語 |
en |
| ISSN |
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収録物識別子タイプ |
ISSN |
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収録物識別子 |
2673-8929 |
| DOI |
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関連タイプ |
isIdenticalTo |
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識別子タイプ |
DOI |
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関連識別子 |
10.3390/microplastics4020030 |
| 権利 |
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|
権利情報 |
© 2025 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/). |
|
言語 |
en |
| 著者版フラグ |
|
|
出版タイプ |
VoR |
|
出版タイプResource |
http://purl.org/coar/version/c_970fb48d4fbd8a85 |
| 引用 |
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|
内容記述タイプ |
Other |
|
内容記述 |
Microplastics, 4(2), art. no. 30; 2025 |
|
言語 |
en |
M4_30.pdf (3.2 MB)
