| アイテムタイプ |
学術雑誌論文 / Journal Article(1) |
| 公開日 |
2024-05-02 |
| タイトル |
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タイトル |
Flow filtration/adsorption and simultaneous monitoring technologies of radiocesium 137Cs in river water |
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言語 |
en |
| 言語 |
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言語 |
eng |
| 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 |
Enomoto Kazuyuki
Hoshina Hiroyuki
Kasai Noboru
Keisuke Kurita (JAEA)
Ueki Yuuji
Nagao Yuuto
Yonggen Yin
Suzui Nobuo
Kawachi Naoki
Seko Noriaki
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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 |
This study develops a method that combines a radiation-grafting fibrous Cs-adsorbent filter of ammoniummeasurements of the activity concentrations of 137Cs in a continuous water flow. To ensure adequate molybdophosphate (AMP) and a Ce:Gd3Al2Ga3O12 scintillator-based γ-ray detector for in situ γperformance, the study locations were set along an upper tributary stream of the Ukedo River and a nearbyspring-fed stream, approximately 30 km northwest of the Fukushima Daiichi Nuclear Power Plant. In thetributary stream, the activity concentrations of 137Cs slowly decreased from 19 to 1.7 mBq/L between 2018and 2020 until reaching equilibrium with a few millibecquerels in 10 years after the accident. Thisequilibrium value is significantly below the admissible radiocesium activity (10 Bq/L) for drinking water.The spring-fed stream rarely included 137Cs. The monitoring results support previous views about theenvironmental fate of 137Cs in a forest ecosystem at the Abukuma granitic catchments. The major advantageof this method is that utilizing fibrous Cs adsorbents with AMP-loaded graft chains enables the effectivesimultaneously, and combining these strategies provide a unique monitoring platform for on-site and real- accumulation of 137Cs through a large amount of stream water. Therefore, 137Cs γ-rays can be detected γtime detection of 137Cs at the trace level. |
| 書誌情報 |
Chemical Engineering Journal
巻 460,
p. 141696,
発行日 2023-02
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| 出版者 |
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出版者 |
Elsevier |
| 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 |
1873-3212 |
| DOI |
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識別子タイプ |
DOI |
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関連識別子 |
doi.org/10.1016/j.cej.2023.141696 |
