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首页> 外文期刊>Applied radiation and isotopes: including data, instrumentation and methods for use in agriculture, industry and medicine >Preparation of alpha-sources of U(VI) and Th(IV) by the electrodeposition technique in the presence of Ca2+ and some trivalent metals
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Preparation of alpha-sources of U(VI) and Th(IV) by the electrodeposition technique in the presence of Ca2+ and some trivalent metals

机译:在Ca2 +和某些三价金属存在下,通过电沉积技术制备U(VI)和Th(IV)的α源

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摘要

A new method for the electrodeposition of uranium and thorium from an aqueous/ethanol media in the presence of Ca(II) and some trivalent metals is described. The deposition is carried out at a constant weak voltage of 30 V and starting current intensity of 3A. The deposition yields of uranium is investigated as a function of the amounts of various carriers and impurities such as Fe, Al, Bi, La and Ca as well as acetic, nitric and hydrochloric acids. All solutions containing up to 900 ppm of Ca2+ and 100 -150 mug of the foreign ions namely: Fe, Bi or La can be used with no chemical separation. Uranium and thorium recoveries between 80 and 96% are obtained and the resolution is typically 25-40 keV. Procedure without chemical purification is proposed for a selective electrodeposition of U(VI) and Th(IV) from one another and from calcium. (C) 2001 Elsevier Science Ltd. All rights reserved. [References: 20]
机译:描述了一种在Ca(II)和某些三价金属存在下从水/乙醇介质中电沉积铀和th的新方法。沉积在30 V的恒定弱电压和3A的起始电流强度下进行。根据各种载体和杂质(如Fe,Al,Bi,La和Ca以及乙酸,硝酸和盐酸)的量,研究了铀的沉积收率。所有含有不超过900 ppm的Ca2 +和100 -150杯外来离子的溶液,即Fe,Bi或La,都可以不经化学分离就使用。铀和th的回收率在80%至96%之间,分离度通常为25-40 keV。提出了不进行化学纯化的方法,以相互之间以及从钙中选择性地电沉积U(VI)和Th(IV)。 (C)2001 Elsevier ScienceLtd。保留所有权利。 [参考:20]

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