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Radium-226 transfer factors for various crop samples collected in Japan
https://repo.qst.go.jp/records/68879
https://repo.qst.go.jp/records/68879fdc5c14b-55fa-4c32-b2c2-f1317e2e038c
| Item type | 会議発表用資料 / Presentation(1) | |||||
|---|---|---|---|---|---|---|
| 公開日 | 2007-03-26 | |||||
| タイトル | ||||||
| タイトル | Radium-226 transfer factors for various crop samples collected in Japan | |||||
| 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× 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 | Soil-to-plant transfer factors (TFs) are a key parameter that directly affects the internal dose assessment for the ingestion pathway of radionuclides. We measured the concentrations of 226Ra in crops and associated soils collected from 80 fields throughout Japan in order to obtain their TFs. The radioactivity of 226Ra was measured with a Ge detector system for soil samples and a liquid scintillation counting system for crop samples after radiochemical separation. We also measured concentrations of Ca, Sr and Ba which are in the same alkaline earth metal group for comparison. Radiochemical separation was used for crop samples, but due to low concentrations, 9 upland field crop samples and 9 brown rice samples could not be measured. Using the 68 measured data, we calculated TFs (dry weight basis); the geometric means of the TFs were 5.7E-4 for brown rice (n=28) and 1.2E-2 for green vegetables (n=12). TFs of Ca, Sr and Ba were similar to TF-Ra. This work has been partially supported by the Agency for Natural Resources and Energy, the Ministry of Economy, Trade and Industry (METI), Japan. |
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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 | 5th International Symposium on Naturally Occurring Radioactive Material (第5回自然起源の放射性物質に関する国際シンポジウム) | |||||
| 発表年月日 | ||||||
| 日付 | 2007-03-22 | |||||
| 日付タイプ | Issued | |||||
