四フッ化ウラン中の6価ウランの定量

本島 健次, 岡下 宏, 勝山 和夫

doi:10.3327/jaesj.2.313

書誌事項

タイトル別名

Polarographic Determination of Hexavalent Uranium
in Uranium Tetrafluoride
ポーラログラフ法

説明

An analytical method is proposed for the polarographic determination of uranium (VI) in uranium tetrafluoride samples.<br> A sample weighing about 500mg is treated with 20ml of 0.1M NaF solution using a magnetic stirrer, and is subjected to centrifugation. Two milliliters of the supernatant solution and 5ml of supporting electrolyte solution (1.3M HOAc+0.7M NH₄OAc+0.2M BeSO₄) are taken into a 10-ml volumetric flask and the resulting solution is diluted to the mark with water. Uranium (VI) in the solution is determined polarographically by referring to the standard calibration curve.<br> For the purpose of suppressing the dissolution of uranium (IV) into the solution, NaF is used at the time of the sample digestion. The acetate buffer solution keeps the pH of the solution at 5 and Be²⁺ ion removes the interference of F^- ion in the polarographic measurements. Instead of Be²⁺, Al³⁺ can be used for the same purpose.<br> By this method as small as 0.05% of uranium (VI) in uranium tetrafluoride can be readily determined.

収録刊行物

日本原子力学会誌

日本原子力学会誌 2 (6), 313-316, 1960

一般社団法人日本原子力学会

詳細情報詳細情報について

CRID: 1390282681528367872

NII論文ID: 130003746556

DOI: 10.3327/jaesj.2.313

ISSN: 21865256; 00047120

本文言語コード: ja

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JaLC
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CiNii Articles

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