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Soil-soil solution distribution coefficients of global fallout 239Pu and 237Np in Japanese paddy soils
https://repo.qst.go.jp/records/84965
https://repo.qst.go.jp/records/8496575a026ea-02d6-4617-b0c4-bea550595764
| Item type | 学術雑誌論文 / Journal Article(1) | |||||
|---|---|---|---|---|---|---|
| 公開日 | 2021-08-23 | |||||
| タイトル | ||||||
| タイトル | Soil-soil solution distribution coefficients of global fallout 239Pu and 237Np in Japanese paddy soils | |||||
| 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 |
Zheng, Jian
× Zheng, Jian× Keiko, Tagami× Shigeo, Uchida× Shibutani, Sanae× Ishida, Keisuke× Hamamoto, Takafumi× Zheng, Jian× Keiko, Tagami× Shigeo, Uchida |
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| 抄録 | ||||||
| 内容記述タイプ | Abstract | |||||
| 内容記述 | 239Pu and 237Np are long-lived radionuclides that emit alpha rays, and once released into the environment, they will exist in the environment for a long period of time. Therefore,239Pu and 237Np are important radionuclides in the safety assessment related to geological disposal of radioactive waste because of the possibility of long-term exposure to humans. Mobilities of these radionuclides in the environment are of interest, therefore, in this study, for the first time, soil-soil solution distribution coefficient (Kd, L/kg) was determined using global fallout 239Pu and 237Np in soil. The Kd values were determined by extracting these radionuclides from 23 soil samples using a laboratory batch method. The desorption Kd values of 239Pu are found to vary from 3.2×103 to 1.4×105 L/kg, and its geometric mean (GM) and arithmetic mean (AM) are 2.3×104 L/kg and 3.2×104 L/kg, respectively. The desorption Kd values of 237Np range from 8.9×102 to 2.1×104 L/kg, and its GM and AM are 4.1×103 L/kg and 6.4×103 L/kg, respectively. A comparison between the obtained Kd of 239Pu and 237Np indicated that 239Pu Kd were about 6-fold higher than 237Np in Japanese paddy field soils. Pearson’s correlation analysis suggested that the main factors contributing to the sorption/desorption of Pu isotopes in Japanese paddy soils were related to the amounts of Fe and Mn oxides, while the sorption/desorption of 237Np in Japanese paddy soils would be controlled by an ion-exchange reaction, and/or complex-formation with organic matter, especially in Fluvisols. | |||||
| 書誌情報 |
Chemosphere 巻 291, 号 1, p. 132775, 発行日 2022-03 |
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| 出版者 | ||||||
| 出版者 | elsevier | |||||
| ISSN | ||||||
| 収録物識別子タイプ | ISSN | |||||
| 収録物識別子 | 0045-6535 | |||||
| DOI | ||||||
| 識別子タイプ | DOI | |||||
| 関連識別子 | 10.1016/j.chemosphere.2021.132775 | |||||
