电离辐射对含有稀土元素、反式钚元素和硝酸的 DTPA 和 NTA 溶液的影响

IF 16.4 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY Accounts of Chemical Research Pub Date : 2024-08-14 DOI:10.1007/s10967-024-09675-4

Oleg V. Kharitonov, Lubov A. Firsova, Evgeny A. Kozlitin

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引用次数: 0

摘要

在放射化学过程中，反式钚元素和含稀土（REE）溶液的辐射分解会破坏络合试剂并沉淀目标产物。我们研究了辐射吸收剂量（AD）和酸度对模拟 DTPA 和 NTA 含稀土 (REE) 溶液消除沉淀行为的影响。我们通过重铬酸盐剂量测定法测量了辐射吸收剂量。在没有硝酸的情况下，AD = 0.12-0.24 MGy 会导致大量 REEs 沉淀。在 HNO3 高达 2 mol L-1 的情况下，直到 1.53 MGy 才会出现沉淀。在 HNO3 1 mol L-1 和 AD = 1.02 MGy 的条件下，DTPA 会完全分解。我们提出了一种避免沉淀的方法。

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Effect of ionizing radiation on DTPA and NTA solutions containing rare-earth and transplutonium elements and nitric acid

Radiolysis of transplutonium elements and rare earths (REE)-containing solutions in radiochemical processes destroys complexing reagents and precipitates target products. We investigated the effect of the radiation-absorbed dose (AD) and acidity on the behavior of simulated DTPA and NTA REE-containing solutions to eliminate precipitation. We measured the AD by bichromate dosimetry. Without nitric acid, the AD = 0.12–0.24 MGy causes abundant precipitation of REEs. In the presence of HNO₃ up to 2 mol L⁻¹, no precipitation occurred up to 1.53 MGy. At HNO₃ 1 mol L⁻¹ and AD = 1.02 MGy, DTPA is entirely decomposed. We have suggested a method to avoid precipitation.

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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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