University of North Florida
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Stuart Chalk, Ph.D.
Department of Chemistry
University of North Florida
Phone: 1-904-620-1938
Fax: 1-904-620-3535
Email: schalk@unf.edu
Website: @unf

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Electrode

Classification: Electrode -> platinum -> Nafion coated

Citations 1

"Pt/Nafion/Pt Electrode Applied To Ammonium Ion Sensor"
Proc. Electrochem. Soc. 1999 Volume 13, Issue 1 Pages 398-408

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T. C. Chou, K. W. Chiou, H. S. Twu, and T. R. Ling

Abstract: Pt/Nafion/Pt electrode prepared by impregnation reduction method was carried out to monitor ammonium ion concentration. in a flow injection system. The current response of the electrode was examined by step change of ammonium ion solution The best sensing condition was determined The preparation conditions of the Pt/Nafion/Pt electrode including impregnation time, temp., and concentration of Pt-solution were optimized, meanwhile, the reducing agent concentration. and its pH value were changed to obtain the max. response current. Different electrolytes were employed to the electrode to compare their performance of sensitivity. The interference of chloride, nitrate, and acetate anions were studied for evaluating their selectivity coefficients to NH3 ion. The sensing mechanism of the electrode on detecting ammonium ion is also discussed.
Ammonium Interferences Optimization