Round-robin analysis of highly depleted lithium for Generation IV nuclear reactor applications

IF 16.4 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY Accounts of Chemical Research Pub Date : 2024-10-29 DOI:10.1016/j.nucengdes.2024.113664

Sean R. Scott , Johnny Williams , Sara Mastromarino , Norbert Gajos , Christian Berry , Ian Anderson , Steven Shen , Trent R. Graham , Cole Hexel , Josh Wimpenny , Jacob Brookhart , Alan Kruizenga

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Abstract

Lithium reference materials containing unnaturally high abundances of ⁷Li are not currently available, which poses quality control problems for highly depleted lithium materials (i.e., depleted in ⁶Li) required for Generation IV nuclear reactors. This study presents an interlaboratory comparison of a lithium carbonate (NIST SRM924a) containing nominally natural isotopic abundances (∼92.4 % Li-7) and a highly depleted lithium hydroxide material (∼99.95 % Li-7). The natural lithium isotope abundances of NIST SRM924a are confirmed, and the ⁶Li/⁷Li ratio of the lithium hydroxide ranged from 0.000399 to 0.000436 with an average of 0.000428 ± 0.000023 (2SD, n = 9). Going forward this material can be used as quality control for analytical work involving highly depleted lithium.

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用于第四代核反应堆的高贫化锂循环分析

目前还没有含有非天然高丰度 7Li 的锂参考材料，这给第四代核反应堆所需的高贫化锂材料（即贫化 6Li）带来了质量控制问题。本研究对一种碳酸锂（NIST SRM924a）和一种高贫化氢氧化锂材料（Li-7 含量为 99.95%）进行了实验室间比较，前者含有名义上的天然同位素丰度（Li-7 含量为 92.4%），后者则含有名义上的天然同位素丰度（Li-7 含量为 99.95%）。NIST SRM924a 的天然锂同位素丰度得到了证实，氢氧化锂的 6Li/7Li 比率介于 0.000399 至 0.000436 之间，平均值为 0.000428 ± 0.000023（2SD，n = 9）。今后，这种材料可用作涉及高贫化锂的分析工作的质量控制。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Accounts of Chemical Research 化学-化学综合

CiteScore

31.40

自引率

1.10%

发文量

312

审稿时长

2 months

期刊介绍： Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance. Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.