Polarographic Determination of Hexavalent Uranium

DOI

Bibliographic Information

Other Title
  • 四フッ化ウラン中の6価ウランの定量
  • in Uranium Tetrafluoride
  • ポーラログラフ法

Description

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.

Journal

Keywords

Details 詳細情報について

  • CRID
    1390282681528367872
  • NII Article ID
    130003746556
  • DOI
    10.3327/jaesj.2.313
  • ISSN
    21865256
    00047120
  • Text Lang
    ja
  • Data Source
    • JaLC
    • Crossref
    • CiNii Articles
  • Abstract License Flag
    Disallowed

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