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

IF 1.5 3区化学 Q3 CHEMISTRY, ANALYTICAL

Journal of Radioanalytical and Nuclear Chemistry Pub Date : 2024-08-14 DOI:10.1007/s10967-024-09675-4

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

引用次数: 0

Abstract

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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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

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。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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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.