后处理料液中铀和硝酸的同时快速分析  

Simultaneous and rapid analysis of uranium and nitric acid during the nuclear fuel reprocessing

作　　者：王玲[1] 张丽华[1] 刘焕良[1] 钱红娟[1] 范德军[1] WANG Ling;ZHANG Lihua;LIU Huanliang;QIAN Hongjuan;FAN Dejun(Department of Radiochemistry,China Institute of Atomic Energy,Beijing 102413,China)

机构地区：[1]中国原子能科学研究院放射化学研究所,北京102413

出　　处：《分析试验室》2022年第6期730-735,共6页Chinese Journal of Analysis Laboratory

摘　　要：根据铀(U(VI))和HNO_(3)在可见及近红外区的光谱吸收特性,结合偏最小二乘法(PLS)分别建立了U(VI)和HNO_(3)的数学分析模型。采用自主研制的铀酸快速分析仪,可同时调用2个分析模型,计算并输出二者浓度值,实现其同时快速测量。U(VI)测定范围0~305 g/L,HNO_(3)测定范围0.1~7.5 mol/L,测量结果的相对偏差均优于7.0%,U(VI)测量相对标准偏差优于2.0%,HNO_(3)测量相对标准偏差优于4.0%。According to the spectral absorption characteristics of uranium and nitric acid in the visible and nearinfrared region,mathematical models were established using the partial least-squares(PLS) method.The simultaneous and rapid measurement has been realized by the self-developed analyzer,which can utilize two analytical models at the same time to calculate and output their concentration values.The measuring ranges were 0-305 g/L for uranium and 0.1-7.5 mol/L for nitric acid.The relative deviations of uranium and nitric acid were all less than 7.0%.The relative standard deviations were better than 2.0% and 4.0% for uranium and nitric acid,respectively.

关 键 词：铀 硝酸 偏最小二乘法 同时快速分析 后处理 

分 类 号：O657.3[理学—分析化学]