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Uranium isotope anomaly in minerals

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Abstract

A series of leaching experiments with HF, HCl, HNO3 were carried out on samples of uranium minerals (uraninite and carnotite samples). Anomalously high234U/238U ratios were observed in some uranium fractions. The observed234U/238U activity ratios varied between the values of 1.019±0.155 and 6.210±0.504 (Ci/Ci), while the bulk carnotite sample had an activity ratio of 1.010±0.005 (Ci/Ci). These results are interpreted as due to alpha-recoil effect and changes in oxidation state of uranium.

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  1. Department of Chemistry and Biochemistry, University of Cross River State, Uyo, Akwa Ibom State, (Nigeria)

    I. O. Essien

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  1. I. O. Essien
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Essien, I.O. Uranium isotope anomaly in minerals. Journal of Radioanalytical and Nuclear Chemistry, Articles 139, 331–337 (1990). https://doi.org/10.1007/BF02061819

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  • DOI: https://doi.org/10.1007/BF02061819

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