阴离子交换树脂分离电感耦合等离子体原子发射光谱法测定二氧化铀微球中钐铕钆镝  

Determination of samarium,europium,gadolinium and dysprosium in uranium dioxide micro balls using inductively coupled plasma atomic emission spectrometry after separation with anion-exchange resin

作　　者：费浩[1] 王树安[1] 廖志海[1] 李洁[1] 安身平[1] 郭蓉[1] 

机构地区：[1]中国核动力研究设计院核燃料及材料重点实验室,四川成都610005

出　　处：《冶金分析》2008年第2期6-9,共4页Metallurgical Analysis

摘　　要：采用电感耦合等离子体原子发射光谱法（ICP-AES）测定二氧化铀微球中Sm,Eu,Gd,Dy杂质元素。试样用HCl＋HNO3溶解,经过阴离子交换树脂使铀与Sm,Eu,Gd,Dy元素分离,用超声波雾化器进样,ICP-AES法测定。对影响测定的各种因素进行了较详细的试验研究,确定了测定最佳条件。对一标准样品进行测定和标准加入回收试验,得到方法平均回收率在90%～102%之间,相对误差小于2.1%。A method is established for the determination of rare earth impurity elements i. e. Sm,Du, Gd and Dy in uranium dioxide micro balls by inductively coupled plasma atomic emission spectrometry. After the sample was dissolved by hydrochloric acid and nitric acid, the sampling solution was introduced to anion-exchange resin to separate Sm,Eu,Gd and Dy from UO2. Subsequently, ultrasonic nebulizer sampling was applied for the analysis of target materials by inductively coupled plasma atomic emission spectrometry. The corresponding tests of every factor affecting the measurement were performed in detail, and then the optimal analysis conditions were acquired. The average recovery of method is 90% to 102%, and the relative standard deviation is less than 2.1%, based on the determination of standard solution and addition. The method is ideally suited for the application of determination of Sin, Eu,Gd and Dy in UO2 sample.

关 键 词：离子交换 电感耦合等离子体原子发射光谱法 二氧化铀微球 稀土 

分 类 号：TL211[核科学技术—核燃料循环与材料]