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HAO Fan-hua, LIU Xue-mei, HU Si-de, LONG Kai-ming. Determinationof Isotope Ratios and Concentration of Trace Uranium in Depleted Uranium Samples by Thermal Ionization Mass Spectrometry[J]. Rock and Mineral Analysis, 2010, 29(4): 373-376.
Citation: HAO Fan-hua, LIU Xue-mei, HU Si-de, LONG Kai-ming. Determinationof Isotope Ratios and Concentration of Trace Uranium in Depleted Uranium Samples by Thermal Ionization Mass Spectrometry[J]. Rock and Mineral Analysis, 2010, 29(4): 373-376.

Determinationof Isotope Ratios and Concentration of Trace Uranium in Depleted Uranium Samples by Thermal Ionization Mass Spectrometry

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  • Received Date: August 25, 2009
  • Revised Date: December 14, 2009
  • With H3PO4 as the ionization intensifier, the isotope ratios of uranium in the depleted uranium samples with uranium concentration at nanogram-level were determined by thermal ionization mass spectrometry (TIMS) with the precision of <2.9%RSD. With 233U as the diluent, the concentration of uranium in the samples were also determined by isotope dilution mass spectrometry (IDMS) with the expanded uncertainty of 2.4% .The research results showed that in uranium isotope ratio determination for the samples with nanogram-level of uranium, uranium background interference from rhenium filament and other sources should not be ignored, which is needed for further study to remove the background interference.
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