化学学报 ›› 1958, Vol. 24 ›› Issue (6): 419-425. 上一篇    下一篇

论文

铈中微量镧、镨、钕与钇的光谱测定

徐宝玲1,2, 沈联芳1,2, 程建华1,2, 张定钊1,2   

  1. 1. 中国科学院冶金陶瓷研究所;
    2. 中国科学院应用化学研究所
  • 收稿日期:1958-06-23 出版日期:1958-12-15 发布日期:2013-06-03

SPECTROGRAPHIC DETERMINATION OF SMALL QUANTITIES OF LANTHANUM, PRASEODYMIUM, NE0DYMIUM AND YTTRIUM IN CERIUM

HSU PAO-LIN1,2, SHEH LIEH-FANG1,2, CHENG CHIEN-HWA1,2, CHANG TING-CHAO1,2   

  1. Institute of Metallurty and Ceramics and Institute of Applied Chemistry, Academia Sinica
  • Received:1958-06-23 Online:1958-12-15 Published:2013-06-03

本工作报告铈中杂质镧、镨, 钕及钇的两种光谱测定方法.(1)将试样的氯化物溶液滴于经液体石腊处理过的碳电极上, 干燥后以交流电弧激发进行摄谱.采用线对 La 4333.74/Ce 43330.90, Pr 4225.33/Ce4229.63, Nd 4061.09/Ce 4057.30及Y 4374.94/Ce 4376.88时测定灵敏度分别可达0.055%, 0.089%, 0.052%, 0.025%.单次摄谱的均方误差分别为±4.7%, ±10.8%, ±7.0%及±7.0%.(2)对于较纯的铈, 则采用乙醚萃取先行分离, 以浓缩其中所含的杂质, 并采用谱线较少的元素钇作内标及载体, 以补偿分离过程中损失.浓缩物仍以氯化物溶液状态用上述的激发方法进行摄谱.采用下列线对:La 4238.38/Y 4235.73, La 3988.52/Y 3951.60, Pr 4222.98/Y 4235.73, Nd 4232.38/Y 4235.73取样100毫克时, 镧、镨及钕的测定灵敏度分别可达0, 01%;0.025%及0.028%.一般误差约在±10%左右.

In the present paper, two methods for the determination of rare earth imprities in "purified" cerium are described.(1) The sample to be analyzed is converted into chlorides(concentration 10mg CeO2/ml and acidity 1:19 HCl).