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 0.782360.00051 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.

Language	:	English
Journal	:	Applied Radiation and Isotopes
Volume	:	190
Number	:
Pages	:	p.110460_1 - 110460_7
Publication Year/Month	:	2022/12
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Paper URL	:	https://doi.org/10.1016/j.apradiso.2022.110460
DOI for research data	:
Keywords	:	ウラン; 三酸化ウラン; 加熱重量法; IDMS; 不確かさ; 再処理施設
Research Facility	:	再処理施設
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InCites™	:	Percentile:31.61 Category:Chemistry, Inorganic & Nuclear
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Registration No. : AA20210836
JAEA Abstracts No. : 50001066
Paper Submission No. : 25826

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