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Transfer of radium-226 from soil to rice: A comparison of sampling area differences
https://repo.qst.go.jp/records/45398
https://repo.qst.go.jp/records/4539820e124aa-eb17-4f6e-bace-9c129be291f8
Item type | 学術雑誌論文 / Journal Article(1) | |||||
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公開日 | 2009-01-15 | |||||
タイトル | ||||||
タイトル | Transfer of radium-226 from soil to rice: A comparison of sampling area differences | |||||
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 |
Uchida, Shigeo
× Uchida, Shigeo× Tagami, Keiko× 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 | Due to limited numbers of radium-226 (226Ra) soil-to-plant transfer data, it has been difficult to analyze the sampling area differences. In this study, we measured 226Ra concentrations in brown rice and associated soils collected from 61 locations throughout Japan and obtained soil-to-rice transfer factors (TFs). Concentrations of 226Ra in the soils collected in southwestern Japan were higher than those in northeastern Japan (t-test, p<0.001); for example, the geometric mean (GM) of 226Ra in southwestern Japan was 40.4 Bq/kg-dry (N=33) and it was 27.8 Bq/kg (N=28) in northeastern Japan, reflecting geological differences between these areas. Using the measured data, we compared TFs in these two areas and found no difference, i.e., the GM in southwest was 4.6x10-4 and it was 4.9x10-4 in northeast. The observed TFs were about one order of magnitude lower than the previously reported TF values for cereals (maize, wheat, and rice), but in the same range for previously reported data for white rice. Among the alkaline earth metals, TF for Ba was well correlated to TF for Ra, but because Ba and Ra concentrations in brown rice were highly correlated, the TF would also be expected to correlate. | |||||
書誌情報 |
Journal of Nuclear Science and Technology 巻 46, 号 1, p. 49-54, 発行日 2009-01 |
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ISSN | ||||||
収録物識別子タイプ | ISSN | |||||
収録物識別子 | 0022-3131 |