摘要
在2mol/L。硝酸介质中,用Cl—5209萃淋树脂吸附钍与其他离子分离,铀、铁、锆、钛、铈等三十多种离子不干扰用氨基G酸偶氮氯膦—溴化十六烷基吡啶显色测定10微克的钍。方法分离效果好,灵敏度高,简便,快速。测定钍的适用范围在0.x~0.000x%之间。
Thorium can be solvent-extracted by Cl-5209 extractant-containing resin in 2 mol/L nitric acid and separated from other ions.More than 30 ions U,Fe,Zr,Ti,Ce etc,cause no interference with the determination of 10μg of thorium with amino-G acid chlorophosphonazo and cetylpyridinium bromide.The method is highly sensitive,simple and rapid.It is applicable to determine Th in the range of 0.n-0.000n%.The relative standard deviation is less than±10% (n = 8) with a recovery of 95-103% The method has been used to determine mic-roamounts of thorium in rocks and ores.
作者
蔡金芳
罗肇汉
Cai Jinfang;Luo Zhaohan
出处
《岩矿测试》
CAS
1986年第2期125-127,I0007,共4页
Rock and Mineral Analysis
