高等学校化学学报

高等学校化学学报 ›› 1989, Vol. 10 ›› Issue (6): 586.

• 研究论文 • 上一篇    下一篇

钐钆富集物中钐、钆的同时测定

王丽莎1, 蔡汝秀2, 曾云鹗2   

  1. 1. 华中理工大学化学系;
    2. 武汉大学化学系
  • 收稿日期:1987-09-21 出版日期:1989-06-24 发布日期:1989-06-24
  • 通讯作者: 王丽莎
  • 基金资助:

    中国科学院自然科学基金

Simultaneous Determination of Samarium and Gadolinium in Their Concentrated Material in the Process of Rare Earth Production

Wang Lisha1, Cai Ruxiu2, Zeng Yun'e2   

  1. 1. Department of Chemistry, Huazhong University of Science and Technology, Wuhan;
    2. Department of Chemistry, Wuhan University, Wuhan
  • Received:1987-09-21 Online:1989-06-24 Published:1989-06-24

PDF (PC)

被引次数

10

摘要： 本文初步探讨了稀土的DBC偶氮胂络合物与CyDTA取代反应机理。对于不同显色剂和取代剂进行了选择,建立了测量钐、钆的最佳反应体系。用速差动力分析法进行了钐钆富集物中钐、钆的同时测定。速差动力分析结果与ICP发射光谱法结果相符。本法测定钐、钆相对含量在1:2～4:1范围,误差约为10%。

关键词: 钐和钆的同时测定, 稀土动力学方法, 单一稀土的速差动力学测定

Abstract: This paper deals preliminarily with the substitution reaction mechanism of RE(DBC)3(DBC = 2-(2-arsenophenylazo)-7-(2, 6-dibromo-4-chlo-rophenylazo)-1,8-dihydroxynaphthalene-3,6-disulfonic acid) with CyDTAbased on the experimental facts and theory deduction. Akinetic reaction system for simultaneous determination of Sm and Gd was established by choosing the best substituent and complexing agent from several aminocarboxylic acids and polyhalidarsenazoes. Under the suitable conditions Sm and Gd in their concentrated material were determined simultaneously in this kinetic reaction system. The result agrees satisfactorily with that obtained by JCP-AES. The synthetic samples of Sm and Gd mixture with a content ratio in the range of 1:2～4: 1(Sm:Gd) were determined by this method. The error of it is about 10%. It is predictable that the method would be used for a control of procedure in the rare earth production.

Key words: Simultaneous determination of Sm and Gd, Kinetic method of rare earth, Rate differential determination of single rare earth

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