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Time dependence on Tc, Mn, Sr and Cs behaviors in agricultural soils under aerobic and anaerobic conditions
https://repo.qst.go.jp/records/53681
https://repo.qst.go.jp/records/536814cd24a9c-62d3-494c-98e4-c3034ebd1e9b
| Item type | 会議発表論文 / Conference Paper(1) | |||||
|---|---|---|---|---|---|---|
| 公開日 | 2006-06-05 | |||||
| タイトル | ||||||
| タイトル | Time dependence on Tc, Mn, Sr and Cs behaviors in agricultural soils under aerobic and anaerobic conditions | |||||
| 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 |
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 | In order to investigate the time dependence on behaviors of Tc, Mn, Sr and Cs in two soils (Andosol and Gray lowland soil) under two different water contents, corresponding to upland and paddy field condition, a radiotracer experiment was carried out. At 1, 3, 7, 14, 30, 60 and 180 days, three soil fractions, (a) water soluble and ion exchangeable, (b) specifically adsorption, and (c) organically bound fractions, were determined by selective extraction methods with 0.05M calcium chloride (CA), 0.5M acetic acid and 0.1M sodium pyrophosphate, respectively. The results showed that the relative amount (Qra) of CA extractable Cs decreased rapidly to almost zero within a few days after being freshly introduced to the soil samples. The Qra of CA extractable Sr in all the samples was almost the same during 6-month. For Mn, the Qra of CA-Mn in Gray lowland soils decreased throughout the experiment, but the soil redox conditions did not affect on the change. the Qra of CA-Mn in Andosol was much lower than that in Gray lowland soils. Interestingly, for Tc, the Qras of CA-Tc was lower in the anaerobic condition than in the aerobic conditions in both soils. Due to the reduce of the amounts of water soluble and exchangeable forms of these elements in soils, the amounts of these elements entering the food chain probably decrease gradually with time. |
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| 書誌情報 |
Proceedings of the International Symposium : Transfer of Radionuclides in Biosphere : Prediction and Assessment : Mito, December 18-19, 2002(JAERI Conf 2003-010) p. 258-263, 発行日 2003-10 |
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| 出版者 | ||||||
| 出版者 | Japan Atomic Energy Research Institute | |||||
