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Analysis of twenty five impurities in uranium matrix by ICP-MS with iron measurement optimized by using reaction collision cell, cold plasma or medium resolution

Alexandre Quemet 1 Rene Brennetot 1 Emilie Chevalier 1 Edwina Prian 1 Anne-Laure Laridon 1 Clarisse Mariet 2 Pascal Fichet 1 Ivan Laszak 2 Florence Goutelard 1
1 LASE - Laboratoire d’analyse en soutien aux exploitants
SEARS - Service d'études analytiques et de réactivité des surfaces : DEN/DPC/SEARS
2 LANIE - Laboratoire de développement Analytique Nucléaire Isotopique et Elémentaire
SEARS - Service d'études analytiques et de réactivité des surfaces : DEN/DPC
Abstract : An analytical procedure was developed to determine the concentration of 25 impurities (Li, Be, Ti, V, Cr, Mn, Fe, Co, Ni, Cu, Zn, Zr, Mo, Ag, Cd, In, Sm, Eu, Gd, Dy, W, Pb, Bi and Th) in a uranium matrix using the quadrupole inductively coupled plasma mass spectrometry (Q-ICP-MS). The dissolution of U3O8 powder was made with a mixture of hydrochloric acid and nitric acid. Then, a selective separation of uranium using the UTEVA column was used before measurement by Q-ICP-MS. The procedure developed was verified using the Certified Reference Material “Morille”. The analytical results agree well except for 5 elements where values are underestimated (Li, Be, In, Pb and Bi). Among the list of impurities, iron was particularly investigated because it is well known that this element possesses a polyatomic interference that increases the detection limit. A comparison between iron detection limits obtained with different methods was performed. Iron polyatomic interference was at least reduced, or at best entirely resolved in some cases, by using the cold plasma or the collision/reaction cell with several gases (He, NH3 and CH4). High-resolution ICP-MS was used to compare the results obtained. A detection limit as low as 8ngL−1 was achieved.
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https://hal-cea.archives-ouvertes.fr/cea-03470725
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Submitted on : Wednesday, December 8, 2021 - 2:21:03 PM
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Alexandre Quemet, Rene Brennetot, Emilie Chevalier, Edwina Prian, Anne-Laure Laridon, et al.. Analysis of twenty five impurities in uranium matrix by ICP-MS with iron measurement optimized by using reaction collision cell, cold plasma or medium resolution. Talanta, Elsevier, 2012, 99, pp.207 - 212. ⟨10.1016/j.talanta.2012.05.041⟩. ⟨cea-03470725⟩

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