医用放射性核素230U和226源230Pa的生产及液-液萃取分离

IF 1.8 4区 化学 Q3 CHEMISTRY, MULTIDISCIPLINARY
A. Vasiliev, S. Ermolaev, E. Lapshina, M. Bravo, A. Skasyrskaya
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引用次数: 1

摘要

摘要根据硝酸和盐酸的浓度、大量钍、氟离子的存在以及硼酸或Al3+离子作为掩蔽剂的添加,研究了不同萃取剂(1-辛醇、MIBK、aliquat 336)对精蛋白的液-液萃取。用1-辛醇萃取,然后用7M HCl+0.1M HF溶液反萃取,证明适用于从用中能质子辐照的钍中选择性分离230Pa。所提出的程序提供了从同一Th靶同时产生医用225Ac和230Pa/230U。在140–35MeV的质子能量范围内,测定了232Th(p,3n)230Pa反应中230Pa形成的实验截面,并与文献数据进行了比较。根据进入厚钍靶的质子的能量,估计了230U的产率以及232U和233U的杂质。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Production of 230Pa as a Source for Medical Radionuclides 230U and 226Th Including Isolation by Liquid–liquid Extraction
ABSTRACT Liquid–liquid extraction of protactinium with different extractants (1-octanol, MIBK, aliquat 336) was studied depending on concentration of nitric and hydrochloric acids, presence of bulk amount of thorium, fluoride ions, and addition of boric acid or Al3+ ions as a masking agent. The extraction with 1-octanol followed by back-extraction with 7 M HCl + 0.1 M HF solution proved to be appropriate for selective 230Pa isolation from thorium irradiated with medium-energy protons. The proposed procedure provided simultaneous production of medical 225Ac and 230Pa/230U from the same Th-target. The experimental cross-sections of 230Pa formation in the reaction 232Th(p,3n)230Pa were determined for the protons energy range of 140–35 MeV and compared with literature data. The yield of 230U and impurities of 232U and 233U depending on the energy of protons entering a thick thorium target were estimated.
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来源期刊
CiteScore
4.40
自引率
5.00%
发文量
15
审稿时长
8.4 months
期刊介绍: Solvent Extraction and Ion Exchange is an international journal that publishes original research papers, reviews, and notes that address all aspects of solvent extraction, ion exchange, and closely related methods involving, for example, liquid membranes, extraction chromatography, supercritical fluids, ionic liquids, microfluidics, and adsorption. We welcome submissions that look at: The underlying principles in solvent extraction and ion exchange; Solvent extraction and ion exchange process development; New materials or reagents, their syntheses and properties; Computational methods of molecular design and simulation; Advances in equipment, fluid dynamics, and engineering; Interfacial phenomena, kinetics, and coalescence; Spectroscopic and diffraction analysis of structure and dynamics; Host-guest chemistry, ion receptors, and molecular recognition.
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