Isotopic and ultratrace analysis of uranium by double-focusing sector field ICP mass spectrometry

被引：0
|
作者：
W. Kerl
J. S. Becker
H.-J. Dietze
W. Dannecker
机构：
[1] Zentralabteilung für Chemische Analysen,
[2] Forschungszentrum Jülich GmbH,undefined
[3] D-52 425 Jülich,undefined
[4] Germany,undefined
[5] Institut für Anorganische und Angewandte Chemie der Universität Hamburg,undefined
[6] D-20 146 Hamburg,undefined
[7] Germany,undefined
来源：
Fresenius' Journal of Analytical Chemistry | 1997年 / 359卷
关键词：
Mass Spectrometry; Uranium; Mass Spectrometer; Isotopic Ratio; Isotopic Analysis;
D O I：
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中图分类号：
学科分类号：
摘要：
An analytical method for the ultratrace and isotopic analysis of uranium in radioactive waste samples using a double-focusing sector field ICP mass spectrometer is described. In high-purity water a detection limit for uranium in the lowest fg/mL range has been achieved. Under optimum experimental conditions (235U/238U ≈ 1), the precision in 235U/238U isotopic ratio determinations has been determined as 0.07% RSD. With the isotopic standard U-020 (235U/238U = 0.0208) a precision of 0.23% RSD at the 100 pg/mL level using ultrasonic nebulization has been achieved. With 234U/238U isotopic ratios of down to 10–5, the values obtained by double-focusing sector field ICP-MS and alpha spectrometry were in agreement.
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页码：407 / 409
页数：2
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