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Soil-to-pant transfer factors of technetium-99 for various plant collected in the Chernobyl area
https://repo.qst.go.jp/records/61260
https://repo.qst.go.jp/records/61260b03a8c12-be21-4eca-ab77-27ab015e403c
| Item type | 会議発表用資料 / Presentation(1) | |||||
|---|---|---|---|---|---|---|
| 公開日 | 2006-01-17 | |||||
| タイトル | ||||||
| タイトル | Soil-to-pant transfer factors of technetium-99 for various plant collected in the Chernobyl area | |||||
| 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 |
Tagami, Keiko
× Tagami, Keiko× Uchida, Shigeo× et.al× 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 | Technetium-99 is one of the most important radionuclides for dose assessment because its most stable form pertechnetate, TcO4-, is highly soluble and rarely adsorbed onto soil. The form of Tc may change to other chemical forms under various conditions; and these different chemical forms play an important role in determining the mobility of Tc in soil-plant systems. Determination of physico-chemical forms of 99Tc in soil and plant samples would advance our understanding of its behavior in the environment; however, its scarcity and low levels in samples has limited the available data. In this study, we determined 99Tc contents in 27 plant samples collected in three forest sites in 1994 and 1995 around the Chernobyl area to obtain transfer factors (TFs) of Tc in the soil-plant system under environmental conditions. The samples were leaves of raspberry, strawberry and pink plants, black alder, birch, cowberry and oak trees, and ferns. After chemical separation, 99Tc in the sample was measured by ICP-MS. Tc-95m was used as a yield tracer and the total recovery ranged from 0.48 to 0.92 with an average of 0.76. The determined 99Tc concentrations in plants ranged from <0.006 to 2.3 mBq kg-1 (dry weight basis). TFs were then calculated as concentration ratios on the dry weight basis. The highest TF was found in the leaves of raspberry plants. Values ranged from <0.006 to 0.47, based on the 99Tc contents of the organic layers. The TFs were much lower than the values of 8.1 - 2600 compiled by IAEA for grass, fodder and leafy vegetables. |
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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 Symposium on Techentium-Science and Utilization | |||||
| 発表年月日 | ||||||
| 日付 | 2005-05-27 | |||||
| 日付タイプ | Issued | |||||
