用于测定气态混合物中氚含量的 LSC 方法,在处理、反应参数和微型化方面进行了优化,以实现微流控分析

IF 1.4 3区 化学 Q4 CHEMISTRY, INORGANIC & NUCLEAR Radiochimica Acta Pub Date : 2024-02-12 DOI:10.1515/ract-2023-0262
Alexandra Becker, Holger Lippold, Jantje Pauline Bäcker, Detlev Belder, Cornelius Fischer
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引用次数: 0

摘要

气态氚的处理和分析对氢同位素分离实验很有意义。在这项工作中,我们介绍了一种易于处理的催化氧化成 HTO 的装置,利用 CuO 作为催化剂,在 900 °C 的反应温度下,通过 LSC 测定回收了所有初始剂量的气态氚。为了减少鸡尾酒的浪费,将 LSC 测定缩小到微流控装置中。根据计数效率对其性能进行了评估,结果表明,当样品量减少到微升量时,计数效率会显著降低,而在样品与鸡尾酒比率的大范围内没有观察到任何变化。
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An LSC approach for tritium determination in gaseous mixtures optimized with respect to handling, reaction parameters and miniaturization towards microfluidic analysis
The handling and analysis of gaseous tritium is of interest for hydrogen isotope separation experiments. In this work, we present an easy-to-handle setup for catalytic oxidation to HTO, recovering all of the initially dosed gaseous tritium as determined by LSC, using CuO as a catalyst at a reaction temperature of 900 °C. Aiming to reduce cocktail waste, the LSC determination was downscaled to a microfluidic setup. The performance was evaluated based on the counting efficiency, which was shown to decrease significantly, as the sample volume was reduced to µl amounts, while no changes were observed over a wide range of sample-to-cocktail ratios.
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来源期刊
Radiochimica Acta
Radiochimica Acta 化学-核科学技术
CiteScore
2.90
自引率
16.70%
发文量
78
审稿时长
6 months
期刊介绍: Radiochimica Acta publishes manuscripts encompassing chemical aspects of nuclear science and technology.
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