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Distinctive distributions and migrations of 239+240Pu and 241Am in Chinese forest, grassland and desert soils
https://repo.qst.go.jp/records/49170
https://repo.qst.go.jp/records/49170280463a3-d406-4427-ab81-67d5cfa9c6b6
| Item type | 学術雑誌論文 / Journal Article(1) | |||||
|---|---|---|---|---|---|---|
| 公開日 | 2018-05-15 | |||||
| タイトル | ||||||
| タイトル | Distinctive distributions and migrations of 239+240Pu and 241Am in Chinese forest, grassland and desert 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 |
Ni, Youyi
× Ni, Youyi× Wang, Zhongtang× Guo, Qiuju× Zheng, Jian× Li, Sixuan× Lin, Jinxian× Tan, Zhaoyi× Huang, Wenna× Ni, Youyi× Zheng, Jian |
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| 抄録 | ||||||
| 内容記述タイプ | Abstract | |||||
| 内容記述 | The vertical distribution and downward migration of 239+240Pu and 241Am in diverse types of Chinese soils (forest, grassland and desert) were studied. The mean 239+240Pu and 241Am activity concentrations in the investigated soil cores were 0.278-0.692 mBq/g and 0.128-0.373 mBq/g, respectively, while the accumulative inventories were 63-138.9 Bq/m2 for 239+240Pu and 28.3-61 Bq/m2 for 241Am. The global fallout was thought to be the source of these radionuclides as indicated by the characteristic 241Am/239+240Pu activity ratios and 240Pu/239Pu atomic ratios in these samples. The well-founded convection-dispersion equation (CDE) was used to calculate the migration parameters of 239+240Pu; meanwhile a compartment model was employed to compare the migration of 239+240Pu and 241Am in successive soil layers. This is the first work that comparatively studies the migrations of 239+240Pu and 241Am in Chinese soils in realistic environments. Results showed that the migration behaviors of 239+240Pu and 241Am were rather similar; both velocities were less than 0.3 cm/y in diverse types of soils. These findings were compatible with those of short-term laboratory simulation experiments in China. | |||||
| 書誌情報 |
Chemosphere 巻 212, p. 1002-1009, 発行日 2018-12 |
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| 出版者 | ||||||
| 出版者 | elsevier | |||||
