电感耦合等离子体原子发射光谱法测定铀铌混合氧化物中镉、锡和锌  

ICP-AES Determination of Cd,Sn and Zn in Uranium-Niobium Mixed Oxide

作　　者：杨平[1] 王鹏[1] 费浩[1] 王占明[1] 

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

出　　处：《理化检验（化学分册）》2018年第2期196-199,共4页Physical Testing and Chemical Analysis(Part B:Chemical Analysis)

摘　　要：铀铌混合氧化物样品0.200 0g用硝酸8mL,氢氟酸2mL进行微波消解后,经苯乙烯-二乙烯苯-磷酸三丁酯萃取柱分离铀与镉、锡、锌,采用电感耦合等离子体原子发射光谱法测定淋洗液中镉、锡和锌的含量。选择镉、锡、锌的分析谱线依次为226.502,189.989,213.856nm。3种元素的质量浓度均在一定范围内与其对应的发射强度呈线性关系,方法的检出限(3s)为0.003~0.02mg·L^(-1)。加标回收率为94.0%~101%,测定值的相对标准偏差(n=6)为3.7%~7.4%。The uranium-niobium mixed oxide sample （0. 200 0 g） was digested with HNOa （8 mL） and HF （2 mL） in microwave systerrL The CL-TBP extraction column was used to separate Cd, Sn and Zn from U. ICP- AES was applied to the determination of CA, Sn and Zn in eluent. Analytical spectral lines of 226. 502, 189. 989 and 213. 856 nm were chosen for the determination of Cd, Sn and Zn respectively. Linear relationships between values of emission intensity and mass concentration of the 3 elements were kept in definite ranges, with detection limits （3s） in the range of 0. 003--0. 02 mg · L 1. Values of recovery found by standard addition method were in the range of 94. 0%--101%, and values of RSD＇s （n=6） in the range of 3.7%--7.4%.

关 键 词：电感耦合等离子体原子发射光谱法 铀铌混合氧化物 元素 

分 类 号：O657.31[理学—分析化学]