Title: Preparation and certification of the uranium nitrate solution reference materials series IRMM-2019 to IRMM-2029 for the isotopic composition
Authors: RICHTER STEPHANVENCHIARUTTI CELIAHENNESSY CARMELJAKOBSSON ULFBUJAK RENATATRUYENS JANAREGBE YETUNDE
Citation: JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY vol. 318 no. 2 p. 1359-1368
Publisher: SPRINGER
Publication Year: 2018
JRC N°: JRC112287
ISSN: 0236-5731 (online)
URI: http://publications.jrc.ec.europa.eu/repository/handle/JRC112287
DOI: 10.1007/s10967-018-6166-9
Type: Articles in periodicals and books
Abstract: The IRMM-2019-2029 series of uranium nitrate solutions was certified for the isotopic composition. The solutions were originally prepared for the certification of the IRMM-019-029 series of uranium hexafluoride (UF6) materials in 2014, for which certification measurements were performed by thermal ionization mass spectrometry after conversion of UF6 into uranyl nitrate solutions. Analyses were performed using the modified total evaporation method and for some materials with low 236U abundances, the n(235U)/n(238U) ratio was measured using a n(233U)/n(236U) double spike. The integrity of the certified values after dilution and ampouling of the original solutions was checked through process control measurements.
JRC Directorate:Nuclear Safety and Security

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