本文件规定了一种通过分光光度法测定硝酸溶液中钚浓度的分析方法，分光光度计安装在热室和手套箱中，允许分析高活性溶液。通常，即使在存在许多阳离子的情况下，该方法也适用于钚浓度高于0.5 mg·l？1在原始样品中，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不同工艺步骤的工艺控制。

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.