title: Differential pulse voltammetry for ion transfer at liquid membranes with two polarized interfaces.
abstract: 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.
authors.affiliation: Departamento de Química Física, Facultad de Química, Universidad de Murcia, 30100 Murcia, Spain. amolina@um.es
authors.forename: A
authors.initials: A
authors.lastname: Molina
authors.forename: C
authors.initials: C
authors.lastname: Serna
authors.forename: J A
authors.initials: JA
authors.lastname: Ortuño
authors.forename: J
authors.initials: J
authors.lastname: Gonzalez
authors.forename: E
authors.initials: E
authors.lastname: Torralba
authors.forename: A
authors.initials: A
authors.lastname: Gil