Uranium contents and 234U/238U activity ratios in aluminium reagents and bauxites.

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Other Title
  • アルミニウム試薬及びボーキサイトに含まれる不純物ウランとそのウラン‐２３４／ウラン‐２３８放射能比
  • アルミニウム シヤク オヨビ ボーキサイト ニ フクマレル フジュンブツ ウラ
  • アルミニウム試薬及びボーキサイトに含まれる不純物ウランとそのウラン-234/ウラン-238放射能比

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Description

Uranium contents and 234U/238U activity ratios in various aluminium reagents and bauxite samples were determined. The U content in Al(NO3)3·9 H2O reagent ranged from 0.9 to 12 ppb, and that in Al metal ranged from 40 to 680 ppb. The 234U/238U activity ratio varied sample by sample, and a large disequilibrium of 4.3 was observed in one reagent. Thus, it is important to consider contamination by U from Al reagents not only in U determinations but also activity measurements. Uranium contents and 234U/238U activity ratios in bauxite samples were also determined. The source of the contaminant U in Al reagents is considered to be bauxite.

Journal

  • BUNSEKI KAGAKU

    BUNSEKI KAGAKU 41 (5), T83-T86, 1992

    The Japan Society for Analytical Chemistry

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