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PVC membrane electrodes for potentiometric determination of tripelennamine
Authors:Eman M El Nemma
Institution:(1) Department of Chemistry, Faculty of Science, University of Qatar, Doha, Qatar
Abstract:The construction of PVC matrix type tripelennamine ion selective electrodes and their use for direct potentiometry, potentiometric titration and flow injection analysis of tripelennamine cation are described. The membranes of these electrodes consist of tripelennamine-tetraphenylborate, reineckate and picrylsulfonate ion-association complexes dispersed in PVC matrix with tributyl phosphate (TBP) plasticizer. The electrodes exhibit near-Nernstian response over the concentration range of 10–1-10–4 M tripelennamine over the pH range 4.5–8.0. Selectivity coefficients data obtained for 17 different organic and inorganic ions are presented. The results obtained for the determination of 29 mgrg/ml-29 mg/ml of tripelennamine with the proposed electrodes show average recoveries of 99.5–99.9% and mean standard deviations of 0.6–1.2%. The data agree well with those obtained by the standard methods.
Keywords:determination of tripelennamine  potentiometry  tetraphenylborate  picrylsulfonate  reineckate  ion-association complexes  flow injection analysis
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