Differential Pulse Voltammetry for Ion Transfer at Liquid Membranes with Two Polarized Interfaces

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 wi...

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Bibliographic Details
Published in:Analytical chemistry (Washington) 2009-06, Vol.81 (11), p.4220-4225
Main Authors: Molina, A, Serna, C, Ortuño, J. A, Gonzalez, J, Torralba, E, Gil, A
Format: Article
Language:English
Subjects:
Analytical chemistry
Chemistry
Electrochemical methods
Exact sciences and technology
Gene expression
General, instrumentation
Ion chromatography
Membranes
Pharmacology
Studies
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Summary: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.
ISSN:0003-2700
1520-6882
DOI:10.1021/ac802503b