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Measurement of Chernobyl fallout technetium-99 in plant samples and its transfer in soil-plant systems
https://repo.qst.go.jp/records/68370
https://repo.qst.go.jp/records/683704de4e833-8cb9-4daa-8ea9-bb2d2a3ea89f
| Item type | 会議発表用資料 / Presentation(1) | |||||
|---|---|---|---|---|---|---|
| 公開日 | 2006-06-05 | |||||
| タイトル | ||||||
| タイトル | Measurement of Chernobyl fallout technetium-99 in plant samples and its transfer in soil-plant systems | |||||
| 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_c94f | |||||
| 資源タイプ | conference object | |||||
| 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 |
Uchida, Shigeo
× Uchida, Shigeo× Tagami, Keiko× Ruhm, Werner× Steiner, M.× Wirth, Erich× 内田 滋夫× 田上 恵子 |
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| 抄録 | ||||||
| 内容記述タイプ | Abstract | |||||
| 内容記述 | Technetium-99 is a pure beta emitter (Emax=0.29keV) and its radiological half-life is 2.1 x 10 5 y. This nuclide is one of the most important radionuclides for dose assessment because of its high mobility in soil and availability to plants. The most stable chemical form under natural surface water conditions is TcO4 - , which is highly soluble and rarely adsorbed onto soil particle surfaces. The chemical form of Tc, however, changes with environmental conditions. Thus it is necessary, for realistic assessment, to obtain transfer parameters, such as soil-to-plant transfer factors (TFs), under natural conditions, but the data have been limited due to trace levels of 99 Tc. Obtaining TFs using global fallout 99 Tc in fields is difficult, because the concentration of 99 Tc is very low. Therefore, we focused on the Chernobyl site where 99 Tc concentration levels have already been shown to be higher than those from global fallout Tc (Uchida et al., 1999). In this study, we determined the concentrations of 99 Tc in soils and plant leaves collected near the Chernobyl site to investigate the transfer of the nuclide in soil-plant systems under natural conditions. |
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| 会議概要（会議名, 開催地, 会期, 主催者等） | ||||||
| 内容記述タイプ | Other | |||||
| 内容記述 | International Conference on Radioactivity in the Environment | |||||
| 発表年月日 | ||||||
| 日付 | 2002-09-05 | |||||
| 日付タイプ | Issued | |||||
