CJCU

Chem. J. Chinese Universities ›› 1988, Vol. 9 ›› Issue (8): 786.

• Articles • Previous Articles     Next Articles

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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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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