石墨炉原子吸光谱法测定铀硅化合物中痕量镉的含量  

Determination of Trace Cadmium in Uranium Silicon Compounds by Graphite Furnace-Atomic Absorption Spectroscopy

作　　者：邓丹 罗凤焱 李洁[1] Deng Dan;Luo Fengyan;Li Jie(Science and Technology on Reactor Fuel and Materials Laboratory,Nuclear Power Institute of China,Chengdu,610213,China)

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,成都610213

出　　处：《核动力工程》2023年第S02期216-220,共5页Nuclear Power Engineering

摘　　要：为准确测得铀硅化合物燃料中镉的含量,为核燃料及材料的产品质量控制和评价提供可靠数据,采用石墨炉原子吸收光谱法对铀硅化合物中镉含量的测定进行研究。通过对实验过程中的溶样条件,仪器最佳参数条件和基体影响行为的探索,得到最佳实验参数,并进行了精密度和加入回收实验。实验结果表明:当镉的质量分数的检测范围为0.1~1.0μg/g,方法回收率为87%~110%,相对标准偏差优于15%。该方法准确便捷,满足铀硅化合物中痕量镉的测定,可在科研或生产中使用。In order to accurately measure the content of cadmium in uranium silicon compounds and provide reliable data for quality control and evaluation of nuclear fuel materials,graphite furnace-atomic absorption spectroscopy is used to study the determination of cadmium in uranium silicon compounds.By exploring the dissolution condition,the best parameter conditions of the instrument and the matrix influence behavior,the best experimental parameters were obtained,and the precision and addition recovery experiments were carried out.The experimental results show that when the detection range of the mass fraction of cadmium is 0.1-1.0μg/g,the recovery rate of the method is 87%-110%,and the relative standard deviation is better than 15%.This method is accurate and convenient,meeting the determination of trace cadmium in uranium and silicon compounds,and can be used in scientific research or production.

关 键 词：铀硅化合物 镉 石墨炉原子吸收光谱法 

分 类 号：TL34[核科学技术—核技术及应用]