电解法富集地下水中用于液体闪烁计数的低水平氚

IF 2.4 Q2 GEOSCIENCES, MULTIDISCIPLINARY
Al Mamun
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引用次数: 0

摘要

干旱地区地下水中的氚含量很低;在大多数情况下,使用传统的液体闪烁计数器(LSC)无法检测到这些低氚水平。为了测量氚活度浓度,地下水中的低水平氚需要通过已知因素富集,以便闪烁计数器能够检测到它。根据国际原子能机构(IAEA)的指示,在实验室设计和制造了电解电池的电解工艺。对已知氚含量的9个加标样品进行富集,并用闪烁计数器测量氚活度浓度。尽管存在一定程度的不确定性,但富集的水中也显示出相当水平的加标样品。在氚活度、富集因子和电解过程所需时间之间得出了相关性。本研究证实,利用所制备的电解池进行电解,可以实现氚初始浓度约10 - 40倍的富集过程。通过控制各种参数,电解过程的简单设计和制造使得使用传统的LSC测量低水平氚变得负担得起。各种统计分析证实了电解过程所得数据的准确性和精密度。在地下水中氚含量极低的地区,这种富集技术将被证明是有价值的,这使得使用传统的液体闪烁计数器检测它们具有挑战性。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Enrichment of Low-Level Tritium in Groundwater via an Electrolysis Process for Liquid Scintillation Counting Applications
Tritium levels in the groundwater of arid regions are very low; in most cases, these low tritium levels cannot be detected using a conventional liquid scintillation counter (LSC). To measure the tritium activity concentration, low-level tritium in groundwater needs to be enriched by a known factor so that the scintillation counter can detect it. An electrolysis process with electrolytic cells was designed and fabricated in our laboratory following the International Atomic Energy Agency (IAEA) instructions. Nine spiked samples with a known quantity of tritium were enriched, and the tritium activity concentration was measured using the scintillation counter. The enriched water exhibits a comparable level of spiked samples, albeit with some degree of uncertainty. A correlation was drawn among the tritium activity, enrichment factor, and the required time for the electrolysis procedure. This study confirmed that an enrichment process of approximately ten- to fortyfold of the initial concentration of the tritium could be achieved using the electrolysis process with the fabricated electrolytic cells. The simple design and fabrication of the electrolysis process by controlling various parameters make it affordable to measure low-level tritium using a conventional LSC. Various statistical analyses confirmed the accuracy and precision of the data obtained by the electrolysis process. This enrichment technique would prove valuable in regions where tritium levels in groundwater are extremely low, making them challenging to detect using conventional liquid scintillation counter.
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来源期刊
Geosciences (Switzerland)
Geosciences (Switzerland) Earth and Planetary Sciences-Earth and Planetary Sciences (all)
CiteScore
5.30
自引率
7.40%
发文量
395
审稿时长
11 weeks
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