Direct determination of the 237Np/238U ratio in nuclear fuel samples by multicollection inductively coupled plasma mass spectrometry (MC-ICP-MS)

被引：1

作者：

Mialle, S. ^{[1
]}

Nonell, A. ^{[1
]}

Cruchet, C. ^{[1
]}

Caussignac, C. ^{[1
]}

Marie, M. ^{[1
]}

Rincel, A. ^{[1
]}

Isnard, H. ^{[1
]}

机构：

[1] Univ Paris Saclay, Serv Physicochim, CEA, F-91191 Gif Sur Yvette, France

来源：

JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY | 2024年 / 333卷 / 10期

关键词：

MC-ICP-MS; Neptunium; Mass spectrometry; Elemental analysis; Atomic ratio; NEPTUNIUM DETERMINATION; RAPID-DETERMINATION; PLUTONIUM; SEPARATION; ACTINIDES; CHROMATOGRAPHY; ISOTOPES; URANIUM; SIGNAL; AM;

D O I：

10.1007/s10967-024-09659-4

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

A new method for the direct measurement of Np-237/U-238 ratio in irradiated UO2 pellets by multicollection inductively coupled plasma mass spectrometry (MC-ICP-MS) is proposed. It allows the determination of ratios down to 10 x 10(-6) mol<middle dot>mol(-1) using ion counter and Faraday cup. This approach was validated by intercomparison with the usual two-step-method (Quadrupole ICP-MS for Np-237 determination and isotope dilution mass spectrometry (IDMS) for U-238). For ratios between 10 x 10(-6) and 100 x 10(-6) mol<middle dot>mol(-1), expanded uncertainties (k = 2) varied from 2.75% to 0.81%, twice lower than the uncertainties determined by the usual method.

引用

页码：4825 / 4835

页数：11

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