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Radium-226 transfer factor from soils to crops and its simple estimation method using uranium and barium concentrations
https://repo.qst.go.jp/records/45643
https://repo.qst.go.jp/records/456438091263f-f189-4ed6-9f67-03758795aca2
| Item type | 学術雑誌論文 / Journal Article(1) | |||||
|---|---|---|---|---|---|---|
| 公開日 | 2009-09-17 | |||||
| タイトル | ||||||
| タイトル | Radium-226 transfer factor from soils to crops and its simple estimation method using uranium and barium concentrations | |||||
| 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 |
Tagami, Keiko
× Tagami, Keiko× Uchida, Shigeo× 田上 恵子× 内田 滋夫 |
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| 抄録 | ||||||
| 内容記述タイプ | Abstract | |||||
| 内容記述 | Radium-226 (226Ra) should be assessed to determine the safety of geological disposal of high-level radioactive and transuranic wastes. Among the environmental transfer parameters that have been used in mathematical models for the environmental safety assessment, soil-to-plant transfer factor (Fv) is of importance; it is defined as the plant/soil concentration ratio. Reported Fv data for 226Ra are still limited due to the low concentration of 226Ra in plants in the natural environment. In this study, we collected Fv of 226Ra (Fv-Ra) for crops and then applied a statistical approach to estimate Fv-Ra instead of directly measuring the radionuclide. We found high correlations between 226Ra and U concentrations in soils (because 226Ra is a progeny in the 238U series), and between 226Ra and Ba concentrations in plants (because they are chemically similar in plant uptake). Using U in soil and Ba in plant values, we could estimate Fv-Ra with good accuracy; the difference between estimated and measured Fv-Ra values was a factor of 1.2 on average for crops. The method could estimate Fv-Ra for the soil-to-plant systems where 226Ra and Ba concentrations in soil are within the normal range, e.g. 8-100 Bq kg-1-dry for 226Ra and 80-960 mg kg-1-dry for Ba. | |||||
| 書誌情報 |
Chemosphere 巻 77, 号 1, p. 105-114, 発行日 2009-09 |
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| ISSN | ||||||
| 収録物識別子タイプ | ISSN | |||||
| 収録物識別子 | 0045-6535 | |||||
