使用 LA-ICPMS 测定硼酸和 B4C 中的 10B/11B

IF 1.4 3区化学 Q4 CHEMISTRY, INORGANIC & NUCLEAR

Radiochimica Acta Pub Date : 2024-03-19 DOI:10.1515/ract-2023-0207

Maity Ujjwal Kumar, Namitha Janarthanam, Bavya Pulipaka, Ushalakshmi Kumar, Manoravi Periasamy, Vijayalakshmi Sreenivasan

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引用次数: 0

摘要

硼同位素比测量在核工业中非常重要，因为它在核电站中被用作中子毒物（以硼酸或 B4C 粒子的形式）和控制棒材料（B4C 粒子）。由于 10B 具有较高的中子吸收截面，核工业中使用的是富集 10B，富集程度从 50% 到 90% 不等。因此，确定硼酸和 B4C 中的 10B/11B 比率至关重要。本研究的主要目的是利用 LA-ICPMS 评估溶液（硼酸）和固体（B4C 颗粒）中的 10B/11B 比率，而无需进行任何预处理，从而避免了 B4C（最硬的材料之一）溶解或粉末化过程中的困难，并可重复使用 B4C 颗粒。本文讨论了 B4C 粒子的 LA-ICPMS 结果，并将其与溶液 ICPMS、TIMS 和 LIMS 进行了比较。用 LA-ICPMS 分析了硼酸溶液（天然丰度）和溶解的 B4C（天然样品；同位素组成富集 ∼67 %），并通过液体取样 ICPMS 数据进行了验证。

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Determination of 10B/11B in boric acid and B4C using LA-ICPMS

Boron isotopic ratio measurement is very important in the nuclear industry because it is used as neutron poison (in the form of boric acid or a B4C pellet) and control rod material (B4C pellet) in nuclear power plants. Since 10B has a higher neutron absorption cross-section, enriched 10B is used in the nuclear industry and the extent of enrichment varies from 50–90 %. Therefore, it is essential to determine the 10B/11B ratio in boric acid and B4C. The prime purpose of the present study is to utilize LA-ICPMS for evaluating 10B/11B ratio both in solution (boric acid) and solid (B4C pellet) without any pre-treatment so that the difficulty in dissolution or powdering process of B4C (one of the hardest materials) can be avoided and the B4C pellet can be reused. The results obtained from LA-ICPMS for the B4C pellet are discussed and compared with the solution ICPMS, TIMS, and LIMS. The solutions of boric acid (natural abundance) and dissolved B4C (natural & ∼67 % enriched isotopic composition) were analyzed by LA-ICPMS and validated by liquid sampling ICPMS data.

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来源期刊

Radiochimica Acta 化学-核科学技术

CiteScore

2.90

自引率

16.70%

发文量

审稿时长

6 months

期刊介绍： Radiochimica Acta publishes manuscripts encompassing chemical aspects of nuclear science and technology.