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Chinese Science Bulletin

, Volume 42, Issue 10, pp 814–817 | Cite as

The isotopic abundance and atomic weight of natural uranium

  • Yongfu Liu
  • Shuchun Fu
Bulletin

Conclusion

The published measurement data of atomic weight of uranium are shown in table 4[9]. The best results are those measured by Smith and Cowanet al. A r (U) = 238.028 79–238.028 90(3), their result error being ISD. The evaluated value of IUPAC-CAWIA is Ar(U)=238.028 9(1). In this work, the result is Ar(U) = 238.028 91(4). The combined uncertainty has been given according to 2SD of the measurement data through the calibration of a series of standard materials of uranium isotopes. It is reasonable to conclude that in this work the uncertainty which characterizes the measurement quality is better than other published data.

Keywords

isotopic abundance of uranium atomic weight of uranium mass spectrometric measurement 

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Copyright information

© Science in China Press 1997

Authors and Affiliations

  • Yongfu Liu
    • 1
  • Shuchun Fu
    • 1
  1. 1.China Institute of Atomic EnergyBeijingChina

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