Here, in this study, data from thirteen laboratories from around the world are presented for a successful certification of uranium isotope ratios in uranium ore concentrate (UOC) certified reference materials from the National Research Council Canada. Different mass spectrometric measurement principles (including SF-ICP-MS, quadruple ICP-MS, TIMS, MC-ICP-MS, SIMS and AMS) and measurement procedures were employed. In general, data from all sources exhibit good consistency with TIMS and MC-ICP-MS showing superior performance. The three candidate UOC CRMs (UCLO-1, UCHI-1 and UPER-1) have natural uranium isotope ratios with certified values of 0.5304(7) x 10-4, 0.5475(2) x 10-4 and 0.5361(4) x 10-4 for n(234U)/n(238U) and 0.007 2563(13), 0.007 2563(10) and 0.007 2542(11) for n(235U)/n(238U), respectively, with expanded uncertainty (k = 2) applicable to the last digit of the value given in the parentheses. Information values for n(236U)/n(238U) in these three CRMs, measured by AMS, are also provided: 10 x 10-12, 200 x 10-12 and 22 x 10-12. The uncertainties of the proposed certified values of uranium isotope ratios in UOC CRMs are superior to available reference materials, and the values of n(234U)/n(238U) and n(236U)/n(238U) show significant variation among the three CRMs.
Zhang, Ruoxi, et al. "<strong>Certification of Uranium Isotope Amount Ratios in a Suite of Uranium Ore Concentrate Certified Reference Materials</strong>." Geostandards and Geoanalytical Research, vol. 46, no. 1, Nov. 2021. https://doi.org/10.1111/ggr.12409
Zhang, Ruoxi, Nadeau, Kenny, Gautier, Eduardo Amilcar, et al., "<strong>Certification of Uranium Isotope Amount Ratios in a Suite of Uranium Ore Concentrate Certified Reference Materials</strong>," Geostandards and Geoanalytical Research 46, no. 1 (2021), https://doi.org/10.1111/ggr.12409
@article{osti_1897425,
author = {Zhang, Ruoxi and Nadeau, Kenny and Gautier, Eduardo Amilcar and Babay, Paola Alejandra and Ramella, José Luis and Virgolici, Marian and Serban, Andreea Elena and Fugaru, Viorel and Kimura, Yoshiki and Venchiarutti, Célia and others},
title = {<strong>Certification of Uranium Isotope Amount Ratios in a Suite of Uranium Ore Concentrate Certified Reference Materials</strong>},
annote = {Here, in this study, data from thirteen laboratories from around the world are presented for a successful certification of uranium isotope ratios in uranium ore concentrate (UOC) certified reference materials from the National Research Council Canada. Different mass spectrometric measurement principles (including SF-ICP-MS, quadruple ICP-MS, TIMS, MC-ICP-MS, SIMS and AMS) and measurement procedures were employed. In general, data from all sources exhibit good consistency with TIMS and MC-ICP-MS showing superior performance. The three candidate UOC CRMs (UCLO-1, UCHI-1 and UPER-1) have natural uranium isotope ratios with certified values of 0.5304(7) x 10-4, 0.5475(2) x 10-4 and 0.5361(4) x 10-4 for n(234U)/n(238U) and 0.007 2563(13), 0.007 2563(10) and 0.007 2542(11) for n(235U)/n(238U), respectively, with expanded uncertainty (k = 2) applicable to the last digit of the value given in the parentheses. Information values for n(236U)/n(238U) in these three CRMs, measured by AMS, are also provided: 10 x 10-12, 200 x 10-12 and 22 x 10-12. The uncertainties of the proposed certified values of uranium isotope ratios in UOC CRMs are superior to available reference materials, and the values of n(234U)/n(238U) and n(236U)/n(238U) show significant variation among the three CRMs.},
doi = {10.1111/ggr.12409},
url = {https://www.osti.gov/biblio/1897425},
journal = {Geostandards and Geoanalytical Research},
issn = {ISSN 1639-4488},
number = {1},
volume = {46},
place = {United States},
publisher = {Wiley - International Association of Geoanalysts},
year = {2021},
month = {11}}
Los Alamos National Laboratory (LANL), Los Alamos, NM (United States); Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
Sponsoring Organization:
USDOE National Nuclear Security Administration (NNSA); Ministry of Education, Culture, Sports, Science and Technology (MEXT); Natural Sciences and Engineering Research Council of Canada (NSERC); National Natural Science Foundation of China; Everest Scientific Research Program of China; China Scholarship Council
Grant/Contract Number:
89233218CNA000001; AC52-07NA27344
OSTI ID:
1897425
Report Number(s):
LA-UR-21-21580
Journal Information:
Geostandards and Geoanalytical Research, Journal Name: Geostandards and Geoanalytical Research Journal Issue: 1 Vol. 46; ISSN 1639-4488