Bk and Cf chromatographic separation and 249Bk/248Cm and 249Cf/248Cm elemental ratios determination by inductively coupled plasma quadrupole mass spectrometry

TALANTA

卷:106

Article

Gourgiotis, A.^1,8  Isnard, H.¹  Nonell, A.¹  Aubert, M.¹  Stadelmann, G.¹  Dupont, E.^2,9  AlMahamid, I.^3,4  Tiang, G.⁷  Rao, L.⁷  Lukens, W.⁷  Cassette, P.⁵  Panebianco, S.²  Letourneau, A.²  Chartier, F.⁶ 

[1] CEA, DEN DPC SEARS LANIE, F-91191 Gif Sur Yvette, France

[2] CEA, DSM IRFU SPhN, F-91191 Gif Sur Yvette, France

[3] New York State Dept Hlth, Wadsworth Ctr, Albany, NY 12201 USA

[4] SUNY Albany, Sch Publ Hlth, Albany, NY 12222 USA

[5] CEA, Lab Natl Henri Becquerel LNE LNHB, LIST, F-91191 Gif Sur Yvette, France

[6] CEA, DEN DPC, F-91191 Gif Sur Yvette, France

[7] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Div Chem Sci, Berkeley, CA 94720 USA

[8] Inst Phys Globe Paris, CNRS, Equipe Geochim & Cosmochim, F-75238 Paris 05, France

[9] OECD Nucl Energy Agcy, F-92130 Issy Les Moulineaux, France

关键词: Ionic Chromatography (IC);    ICP-QMS;    Berkelium;    Californium;    Curium;   

DOI  :  10.1016/j.talanta.2012.11.056

来源: Elsevier

【 摘 要 】

The French Atomic Energy Commission has carried out several experiments for the study of minor-actinide transmutation processes in high intensity thermal neutron flux. In this context a Cm sample enriched in Cm-248 (similar to 97%) was irradiated in a thermal neutron flux at the High Flux Reactor (HFR) of the Laue-Langevin Institute (ILL). The precise and accurate determination of Cf isotope ratios and of Bk-249/Cm-248 and Cf-249/Cm-248 elemental ratios in the Cm-248 irradiated sample is crucial for the calculation of actinide neutron capture cross-sections. This work describes an analytical procedure for the separation and the isotope ratio measurement of Bk and Cf in the irradiated sample. The Bk and Cf separation is based on a lanthanides separation protocol previously developed by the laboratory. Well-defined retention times for Bk and Cf were obtained by coupling the Ionic Chromatography (IC) with an ICP-QMS. All conditions of element separation by IC and the different steps of the analytical protocol in order to obtain the isotopic and elemental ratios are presented. Relative uncertainties of Cf isotopic ratios range from 0.3% to 0.5% and the uncertainty of the Bk-249/Cm-248 and Cf-249/Cm-248 elemental ratios are respectively 6.1% and 3.2%. This level of uncertainty for both isotopic and elemental ratios is in perfect agreement with the requirement for transmutation studies. (C) 2012 Elsevier B.V. All rights reserved.

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