泥岩中Sr2+电迁移研究：扩散与模拟

IF 1.5 3区化学 Q3 CHEMISTRY, ANALYTICAL

Journal of Radioanalytical and Nuclear Chemistry Pub Date : 2025-03-07 DOI:10.1007/s10967-025-10043-z

Shengchao Li, Duo Zhou, Mingfang Zhou, Hongyun Liu, Ping Chen

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引用次数: 0

摘要

泥岩作为一种天然屏障，是阻断深部地质储存库中放射性核素迁移的重要介质。为了在限定时间内获得Sr2+通过泥岩薄片的有效扩散系数，本研究进行了Sr2+电迁移实验。结果表明，随着电压的增加，有效扩散系数随本底电解质溶液的增加而减小。这可能是离子强度和胶体形成的影响所致。结果表明，电迁移技术可以快速获得有效扩散系数。电迁移技术在花岗石等致密介质中具有广阔的应用前景。

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Research on electromigration of Sr2+ in mudstone: diffusion and modelling

Mudstones serve as a natural barrier and is a crucial medium for blocking the migration of radionuclides in deep geological repository. In this study, electromigration experiments of Sr²⁺ were conducted to obtain the effective diffusion coefficients through mudstone slices in limited time. The results indicate that as the voltage increasedthe effective diffusion coefficients decreased with increasing background electrolyte solution. This may result from influence of ionic strength and formation of colloids. Electromigration technique was confirmed to be reliable to quick acquire the effective diffusion coefficient. Great potential is expected for electromigration technique in investigation in dense medium, such as granite.

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来源期刊

Journal of Radioanalytical and Nuclear Chemistry 化学-分析化学

CiteScore

2.80

自引率

18.80%

发文量

504

审稿时长

2.2 months

期刊介绍： An international periodical publishing original papers, letters, review papers and short communications on nuclear chemistry. The subjects covered include: Nuclear chemistry, Radiochemistry, Radiation chemistry, Radiobiological chemistry, Environmental radiochemistry, Production and control of radioisotopes and labelled compounds, Nuclear power plant chemistry, Nuclear fuel chemistry, Radioanalytical chemistry, Radiation detection and measurement, Nuclear instrumentation and automation, etc.