高等学校化学学报 ›› 1995, Vol. 16 ›› Issue (4): 523.

• 论文 • 上一篇    下一篇

吡嗪-2,3-二羧酸体系导数荧光法同时测定铕、铽

刘淑萍, 黄汉国   

  1. 唐山工程技术学院化工系, 唐山, 063009
  • 收稿日期:1994-08-02 修回日期:1994-11-25 出版日期:1995-04-24 发布日期:1995-04-24
  • 通讯作者: 黄汉国
  • 作者简介:刘淑萍,女,37岁,硕士,讲师.
  • 基金资助:

    河北省自然科学基金

Simultaneous Determination of Europium and Terbium by Derivative Fluorometry with Pyrazine-2,3-Dicarboxylic acid System

LIU Shu-Ping, HUANG Han-Guo   

  1. Tanshan Institute of Technology, Tangshan, 063009
  • Received:1994-08-02 Revised:1994-11-25 Online:1995-04-24 Published:1995-04-24

摘要: 研究了以吡嗪-2,3-二羧酸(PYDA)为荧光试剂应用导数荧光技术同时测定Eu3+、Tb3+的最佳条件、共存离子的影响和Eu3+、Tb3+-PYDA配合物的配合比、稳定常数及发光机理。Eu3+、Tb3+的检测限分别达4.0和2.0ng/mL,利用本方法成功地测定了稀土试样中铕、铽的含量。

关键词: 导数荧光法, 吡嗪-2, 3-二羧酸, 铕,

Abstract: The paper studies the stoichiometry and the fluorescence emitting mechanism of Eu3+,Tb3+complexes with pyrazine-2,3-dicarboxylic acid. The optimum conditions of simultaneous determination for Eu3+, Tb3+by derivative fluorometry are established. The interference of other ions is investigated. The detection limits of Eu3+, Tb3+are 4.0ng/mLand 2.0ng/mL, respectively. This method for analyzing the amount of Eu3+, Tb3+in rare earth samples has been proved to be satisfactory.

Key words: Derivative fluorometry, Pyrazine-2,3-dicarboxylic acid, Europium, Terbium

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