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Report No.

Accurate and precise measurement of uranium content in uranium trioxide by gravimetry; Comparison with isotope dilution mass spectrometry and its uncertainty estimation

Yamamoto, Masahiko   ; Horigome, Kazushi ; Kuno, Takehiko 

Gravimetric measurement of U content in UO$$_{3}$$ with ignition in the air has been investigated. The ignition temperature, ignition time and aliquot sample mass are optimized as 900$$^{circ}$$C, 60 minutes, and 1 g, respectively. The method is validated by IDMS with uncertainty estimation. The obtained result by gravimetry is 0.78236$$pm$$0.00051 g/g (k=2) and agreed with IDMS value within its uncertainty. It has been found that U in UO$$_{3}$$ can be measured accurately and precisely by gravimetry.



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Category:Chemistry, Inorganic & Nuclear



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