摘要
采用ＣＬ—５２０８萃淋树脂分离铀后，用二次导数极谱法测定铀氧化物中的镉．方法的相对标准偏差优于１０％，回收率９５％－１１１％。称样０．２００ｇ时，测定下限可达０．０５μｇ／ｇ。
A method for determination of cadmium in reactor-grade uranium oxide separated by leyextrel resin CL-5208 in 3mol/L nitric acid and determined by secondary derivative polarography was developed. In the HCl-KI-VC-amygdalic acid medium, cadmium gets a sensitive complex-adsorptive wave. The peak potential is about-0. 70V(vs. SCE). There is a fine linear relationship between the peak current and the concentration of cadmium over the range of 0. 005 to 0. 1μg/mL. The RSD is less than 10%. The recovery is between 95%-111% when the additive Cd amount is 0. 1μg/g and 0. 2μg/g. Sampling 0.200g,the lower limit of determination is 0. 05μg/g. The method is rapid and simple.
出处
《铀矿冶》
CAS
1994年第2期112-116,共5页
Uranium Mining and Metallurgy
关键词
镉
极谱法
萃淋树脂
氧化铀
Uranium oxide
Cadmium
Adsorptive polarography
Levextrel resin
