硝酸钍中钍含量的测定  

The Analysis of Thorium Content in Thorium Nitrate

作　　者：郑娜 王占明[1] 赵峰[1] 李洪玉 贺含毅 Zheng Na;Wang Zhanming;Zhao Feng;Li Hongyu;He Hanyi(State Key Laboratory for Reactor Fuel and Materials,Nuclear Power Institute of China,Chengdu 610213,China)

机构地区：[1]中国核动力研究设计院反应堆燃料及材料国家重点实验室,四川成都610213

出　　处：《广东化工》2020年第19期146-148,157,共4页Guangdong Chemical Industry

摘　　要：作为一种能源材料,钍的准确测定是十分必要的。钍元素受初级X射线激发可以产生特征谱线,本研究采用溶液法利用X射线荧光光谱仪对钍的含量进行测定。在检测分析过程中,对检测的浓度和仪器参数进行了优化,本方法钍含量测试范围为1~4 g/L,方法具有可重复性,6次试验的测量精密度(RSD%,n=6)优于1.2%,不需要复杂的处理过程,试验便捷迅速,满足测量需求。As an energy material,accurate determination of thorium is necessary.Because the excitation of thorium element can produce characteristic spectra,the solution method can be used to determine the content of thorium by X-ray fluorescence spectrometer.During the detection and analysis process,the detection concentration and the parameters of the instrument are optimized.The method can test the thorium content is 1~4 g/L,the method is reproducible,the measurement precision of 6 experiments(RSD%,n=6)is better than 1.2%,no complicated processing is needed,the experiment is convenient and rapid and meets the measurement requirements.

关 键 词：硝酸钍 钍 X射线荧光 溶液法 自吸效应 

分 类 号：O65[理学—分析化学]