Fluorometry of UO22+ ion in nitric acid solutions.
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概要
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The UO<SUP>2+</SUP><SUB>2</SUB> fluorescence spectra were measured for solutions whose conditions, except for coexisting species, corresponded to high level waste (HLW) solutions in the nuclear fuel reprocessing plants. From these spectra it was ascertained that the U concentration can be determined in the range of 2200 g/m<SUP>3</SUP> with an accuracy of 1 g/m<SUP>3</SUP> at 3040°C. The UO<SUP>2+</SUP><SUB>2</SUB> fluorescence was influenced significantly by the temperature. The apparant activation energy of the temperature effect was 35.7 kJ/mol. The fluorescence intensities increased with nitric acid concentration in the range of 0.754.5 mol/dm<SUP>3</SUP>. The temperature effect was considered to be caused by a chemical process concerned with water molecules.
- 一般社団法人 日本原子力学会の論文
著者
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Fujimori Haruo
Energy Research Laboratory Hitachi Lid.
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MATSUI Tetsuya
Energy Research Laboratoty, Hitachi, Ltd.
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Suzuki Kazumichi
Energy Research Laboratory Hitachi Ltd.
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SUZUKI Kazumichi
Energy Research Laboratory, Hitachi, Ltd.
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HAYASHI Shotaro
Tokai Works, Power Reactor and Nuclear Fuel Development Corp.
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WADA Yukio
Tokai Works, Power Reactor and Nuclear Fuel Development Corp.
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