Journal
ANALYTICAL CHEMISTRY
Volume 81, Issue 11, Pages 4220-4225Publisher
AMER CHEMICAL SOC
DOI: 10.1021/ac802503b
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Funding
- Direccion General de Investigacion Cientifica y Tecnica [CTQ2005-06977/BQU, CTQ2006-12552/BQU, CTQ2008-04806/BQU]
- Fundacion SENECA [03079/PI/05, 08813/PI/08]
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A simple analytical expression for the response of the double-pulse technique differential pulse voltammetry (DPV) corresponding to ion transfer processes in systems with two liquid/liquid polarizable interfaces has been deduced. This expression predicts lower and wider curves than those obtained with a membrane system with a single polarizable interface. Moreover, the peak potential of these systems is shifted 13 mV from the half-wave membrane potential. We have applied this expression to study the ion transfer of drugs with different pharmacological activities (verapamil, clomipramine, tacrine, and imipramine), at a solvent polymeric membrane ion sensor.
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