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Transfer factor of radium-226 from soil-to-rice
https://repo.qst.go.jp/records/53658
https://repo.qst.go.jp/records/5365810186aa1-698c-4d41-aba7-3b6c0374abae
| Item type | 会議発表論文 / Conference Paper(1) | |||||
|---|---|---|---|---|---|---|
| 公開日 | 2006-05-29 | |||||
| タイトル | ||||||
| タイトル | Transfer factor of radium-226 from soil-to-rice | |||||
| 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_5794 | |||||
| 資源タイプ | conference paper | |||||
| 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× et.al× 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 | In the environment, Ra occurs naturally and is distributed widely in environmental materials, such as rock, soil, water and plants; however, its concentration is extremely low. Thus, soil-to-plant transfer factor (TF) data obtained under natural conditions are limited. In this study, we determine the concentrations of Ra-226 in brown rice and associated paddy soils collected from 11 locations throughout Japan to obtain TFs. The radioactivity was measured with a Ge detector system for soil samples and a liquid scintillation counting system for brown rice after radiochemical separation. The recoveries of Ba, used as a chemical yield tracer for Ra, were more than 97% for all the samples. The concentrations of Ra-226 in paddy soil samples ranged from 20 to 65 Bq/kg-dry soil, and those in the brown rice samples ranged from 8 to 65 mBq/kg-dry except for two samples (<DL). Using the data, TFs were calculated and the average TF of Ra-226 from the paddy soil to the rice (brown rice) was 6.8E-4. This value was close to the TFs for maize reported in the IAEA Technical Reports Series No. 364. | |||||
| 書誌情報 |
Waste Management Symposium Proceedings 巻 31, p. 5148, 発行日 2005-06 |
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