分光光度法用于核燃料后处理工艺料液中钚价态分析的研究进展  

Research progress on spectrophotometric analysis of plutonium valence states in nuclear fuel reprocessing liquid

作　　者：王志恒 李力 赵雅平 刘权卫 侯留东 WANG Zhiheng;LI Li;ZHAO Yaping;LIU Quanwei;HOU Liudong(China Nuclear Power Engineering Co.,Ltd.,Beijing 100840,China)

机构地区：[1]中国核电工程有限公司,北京100840

出　　处：《冶金分析》2024年第5期31-37,共7页Metallurgical Analysis

摘　　要：核燃料后处理工艺料液中钚的价态是影响分离的关键因素,对钚的回收及纯化具有重要意义。由于不同价态的钚元素在可见光-近红外区均具有显著的吸收峰,因此分光光度法仍是普遍采用的分析方法,可不经分离直接测量。本文对分光光度法分析核燃料后处理工艺料液中钚价态的研究进展进行了综述。首先介绍了分光光度法的测量原理,其次详细论述了不同价态钚元素分光光度法及其影响因素、长光程流通池及谱峰解析技术。The valence state of plutonium in nuclear fuel reprocessing liquid is a critical factor affecting the separation of elements,and it is of great significance for the recovery and purification of plutonium.Since the plutonium ions with various valence states have significant absorption peaks in the visible and near-infrared regions,spectrophotometry is still a commonly used analytical method,which can directly measure the sample without separation.The research progress of spectrophotometry in the analysis of plutonium valence in nuclear fuel reprocessing liquid was reviewed in this paper.The principle of spectrophotometric determination was introduced,and then the measurement of plutonium elements with various valence states by spectrophotometry as well as the influencing factors,long optical path flow cell and peak resolution technology were discussed in detail.

关 键 词：分光光度法 钚价态 长光程流通池 谱峰解析 核燃料后处理工艺料液 

分 类 号：O657.32[理学—分析化学] TL27[理学—化学]