高等学校化学学报

高等学校化学学报 ›› 1988, Vol. 9 ›› Issue (8): 786.

• 论文 • 上一篇    下一篇

表面活性剂对Ag+-H2QS-K2S2O8荧光体系的增敏作用及其分析应用

郭雅先, 俞世荣, 魏庆询, 孙书菊   

  1. 吉林大学化学系
  • 收稿日期:1987-01-12 出版日期:1988-08-24 发布日期:1988-08-24
  • 通讯作者: 郭雅先

The Enhanced Effect of Surfactant on the Ag+-H2QS-K2S2O8 Fluorescence System and Its Analytical Application

Guo Yaxian, Yu Shirong, Wei Qingxun, Sun Shuju   

  1. Department of Chemistry, Jilin University, Changchun
  • Received:1987-01-12 Online:1988-08-24 Published:1988-08-24

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摘要： 在弱碱性(pH10)介质中桂皮酸盐可以增加Ag+-H2QS-K2S2O8体系的荧光强度。其最大激发和发射波长分别为325nm和420nm,当Ag+浓度在2～40μgL-1范围内时,荧光强度与之成良好的线性关系。共存重金属离子的影响可用EDTA型阴离子交换柱除去。据此拟定的分析程序用于废水分析结果良好。

关键词: 荧光增敏, 荧光光度测定, 银的测定

Abstract: The fluorescence of the Ag+-H2QS-K2S2O8 system was greatly enhanced by cinnamic acid in the solution of pH10. The excitation maximum occured at 325nm with fluorescence occurred at 420nm.The sensitivity of this reaction is eight-fold higher than that of the reaction in an acid medium(pH1.5~3.5) without the cinnamic acid and the detection limit was found to be 2.0 μg/L. The influece of foreign ions can be eliminatied by ion exchange separation by using a column of anion exchanger of EDTA type.

Key words: Fluoremetry effect, Fluorescence enhanced, Determination of silver

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