Distribution characteristics of radionuclides (226Ra, 234U, and 238U) and ratios (226Ra/234U, 226Ra/238U, and 234U/238U) in quarry lake environment: experimental and model assessment

IF 16.4 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY Accounts of Chemical Research Pub Date : 2024-08-09 DOI:10.1007/s10967-024-09678-1

Van Thang Nguyen, Cong Hao Le

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Abstract

The abandonment of stone quarries establishes a quarry lake ecosystem that includes soil, water, fish, and vegetarian cover. The activity concentrations (ACs) of natural radionuclides in the waters of several quarry lakes worldwide have not been investigated. In addition, the features of radionuclides, such as distribution, seasonal variability, and health risks, have not been studied. In this study, the ACs of ²²⁶Ra, ²³⁴U, and ²³⁸U were measured in a typical quarry lake in Vietnam with an area of approximately 4000 m². The average ACs of ²²⁶Ra, ²³⁴U, and ²³⁸U were 8.3, 13.8, and 17.7 mBq L⁻¹, respectively. The ratios of ²²⁶Ra/²³⁴U, ²²⁶Ra/²³⁸U, and ²³⁴U/²³⁸U were 0.47, 0.6, and 0.79, respectively. A linear correlation was found between ACs and water depth. The ACs predicted by the QWASI (Quantitative Water, Air, Sediment Interaction) model agree with the measured values.

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采石湖环境中放射性核素（226Ra、234U 和 238U）的分布特征和比率（226Ra/234U、226Ra/238U 和 234U/238U）：实验和模型评估

石矿废弃后会形成一个石矿湖生态系统，包括土壤、水、鱼类和植被。目前尚未对全球多个采石场湖泊水体中天然放射性核素的放射性活度浓度（AC）进行调查。此外，放射性核素的分布、季节性变化和健康风险等特征也未得到研究。本研究在越南一个面积约为 4000 平方米的典型采石湖中测量了 226Ra、234U 和 238U 的 AC 值。226Ra、234U 和 238U 的平均 AC 分别为 8.3、13.8 和 17.7 mBq L-1。226Ra/234U、226Ra/238U 和 234U/238U 的比率分别为 0.47、0.6 和 0.79。ACs与水深之间呈线性相关。QWASI（定量水、空气、沉积物相互作用）模型预测的 AC 与测量值一致。

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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.

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