Solubility Product of Hexavalent Uranium Hydrous Oxide
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概要
- 論文の詳細を見る
The solubility of U(VI) hydrous oxide was measured in the hydrogen ion concentration (pHc) range from 4 to 6 at 25±1°C in a NaClO4 solution. The experiment was carried out by oversaturation method at ionic strength I=0.1, 0.5 and 1.0 and by undersaturation method at I=1.0. The solid phase was found to be composed of a mixture of UO3·2H2O and UO2(OH)2 by XRD. The concentration of U(VI) was measured by inductively coupled plasma mass spectrometry (ICP-MS), and was analyzed to obtain the solubility products (Ksp), by taking into account the participation of the U(VI) hydrolysis species such as (UO2)2(OH)22+. By using the literature values of the hydrolysis species and by using the specific interaction theory (SIT), the logKsp° value at the standard state (I=0) was determined to be logKsp°=−22.46±0.10. Possible differences in the logKsp° values due to different solid phases were recognized.
- 一般社団法人 日本原子力学会の論文
- 2005-03-25
著者
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YAMANA Hajimu
Research Reactor Institute, Kyoto University
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KAWAMOTO Keizo
Research Reactor Institute, Kyoto University
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Fujii Toshiyuki
Research Reactor Institute Kyoto University
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SASAKI Takayuki
Department of Surgery, Shinshu University School of Medicine
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Yamana H
Research Reactor Institute Kyoto University
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Yamana Hajimu
Research Reactor Institute Kyoto University
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Kawamoto Keizo
Research Reactor Inst. Kyoto Univ.
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MORIYAMA Hirotake
Department of Nuclear Engineering, Kyoto University
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Moriyama Hirotake
Department Of Nuclear Engineering Kyoto University
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FUJIWARA Kenso
Department of Nuclear Engineering, Graduate School of Engineering, Kyoto University
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Fujiwara Kenso
Research Reactor Institute Kyoto University
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Fujiwara Kenso
Department Of Nuclear Engineering Graduate School Of Engineering Kyoto University
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Sasaki Takayuki
Department Of Nuclear Engineering Kyoto University
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Sasaki Takayuki
Department Of Biology Faculty Of Science Niigata University
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Yamana Hajimu
Res. Reactor Inst. Kyoto Univ.
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Fujii Toshiyuki
Research Reactor Institute, Kyoto University
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FUJII Toshiyuki
Research Laboratories, Fujisawa Pharmaceutical Co., Ltd.
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