核能 - 核燃料技术 - 分光光度法测定硝酸溶液中的钚

[中文适用范围]： 本文件规定了一种分光光度法的分析方法，用于测定硝酸溶液中的钚浓度，在热室和手套箱中使用分光光度计，可以分析高活性溶液。 通常，该方法适用于原始样品中钚浓度高于 0.5 mg·l−1 的情况，即使存在大量阳离子，也不会受到干扰，且具有标准不确定度，覆盖因子 k = 1，小于5%。 该方法旨在用于核燃料后处理厂或其他核设施中过程的不同步骤的过程控制。 [外文原描述]： This document specifies an analytical method by spectrophotometry, for determining the plutonium concentration in nitric acid solutions, with spectrophotometer implemented in hot cell and glove box allowing the analysis of high activity solutions. Commonly, the method is applicable, without interference, even in the presence of numerous cations, for a plutonium concentration higher than 0,5 mg·l −1 in the original sample with a standard uncertainty, with coverage factor k = 1, less than 5 %. The method is intended for process controls at the different steps of the process in a nuclear fuel reprocessing plant or in other nuclear facilities.