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Behavior of Radiocesium in Sediments in Fukushima Coastal Waters: Verification of Desorption Potential through Pore Water
https://repo.qst.go.jp/records/80892
https://repo.qst.go.jp/records/808924d024372-663f-45dc-9969-20339f18d925
| Item type | 学術雑誌論文 / Journal Article(1) | |||||
|---|---|---|---|---|---|---|
| 公開日 | 2020-11-05 | |||||
| タイトル | ||||||
| タイトル | Behavior of Radiocesium in Sediments in Fukushima Coastal Waters: Verification of Desorption Potential through Pore Water | |||||
| 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 | |||||
| アクセス権 | ||||||
| アクセス権 | metadata only access | |||||
| アクセス権URI | http://purl.org/coar/access_right/c_14cb | |||||
| 著者 |
Otosaka, Shigeyoshi
× Otosaka, Shigeyoshi× Kambayashi, Shota× Fukuda, Miho× Tsuruta, Tadahiko× Misonou, Toshiharu× Suzuki, Takashi× Aono, Tatsuo× Shota, Kambayashi× Miho, Fukuda× Tatsuo, Aono |
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| 抄録 | ||||||
| 内容記述タイプ | Abstract | |||||
| 内容記述 | Concentrations of 137Cs in seawater, seabed sedi- ment, and pore water collected from the area around Fukushima were investigated from 2015 to 2018, and the potential of coastal sediments to supply radiocesium to the bottom environment was evaluated. The 137Cs concentration in the pore water ranged from 33 to 1934 mBq L−1 and was 10−40 times higher than that in the overlying water (seawater overlying within 30 cm on the seabed). At most stations, the 137Cs concentrations in the overlying water and the pore water were approximately proportional to those in the sediment. The conditional partition coefficient between pore water and sediment was [0.9−14] × 102 L kg−1, independent of the year of sampling. These results indicated that an equilibrium of 137Cs between pore water and sediment has been established in a relatively short period, and 137Cs in the pore water is gradually exported to seawater near the seabed. A simple box model estimation based on these results showed that 137Cs in the sediment decreased by about 6% per year by desorption/diffusion of 137Cs from the seabed. |
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| 書誌情報 |
Environmental Science & Technology 巻 54, 号 21, p. 13778-13785, 発行日 2020-11 |
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| 出版者 | ||||||
| 出版者 | ACS Publishinos | |||||
| ISSN | ||||||
| 収録物識別子タイプ | ISSN | |||||
| 収録物識別子 | 0013-936X | |||||
| DOI | ||||||
| 識別子タイプ | DOI | |||||
| 関連識別子 | 10.1021/acs.est.0c05450 | |||||
| 関連サイト | ||||||
| 識別子タイプ | URI | |||||
| 関連識別子 | https://pubs.acs.org/doi/10.1021/acs.est.0c05450 | |||||
