Analytica Chimica Acta, ( ISI ), Volume (826), Year (2014-4) , Pages (12-20)

Title : ( Facilitated ion transfer of protonated primary organic amines studied by square wave voltammetry and chronoamperometry )

Authors: E.Torralba , J.A. Ortuno , A.Molina , C. serna , Fereshteh Karimian Azimi Saraf ,

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Abstract

The transfer of the protonated forms of heptylamine, octylamine, decylamine, procaine and procainamide facilitated by dibenzo-18-crown-6 from water to a solvent polymeric membrane has been investigated by using cyclic square wave voltammetry. The experimental voltammograms obtained are in good agreement with theoretical predictions. The values of the standard ion transfer potential, complexation constant and diffusion coefficient in water have been obtained from these experiments, and have been used to draw some conclusions about the lipophilicity of these species and the relative stability of the organic ammonium complexes with dibenzo-18-crown-6. The results have been compared with those provided by linear sweep voltammetry. Calibration graphs were obtained with both techniques. An interesting chronoamperometric method for the determination of the diffusion coefficient of the target ion in the membrane has been developed and applied to all these protonated amines.

Keywords

Protonated primary organic amines Facilitated ion transfer Cyclic square wave voltammetry Liquid membranes
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@article{paperid:1057266,
author = {E.Torralba and J.A. Ortuno and A.Molina and C. Serna and Karimian Azimi Saraf, Fereshteh},
title = {Facilitated ion transfer of protonated primary organic amines studied by square wave voltammetry and chronoamperometry},
journal = {Analytica Chimica Acta},
year = {2014},
volume = {826},
month = {April},
issn = {0003-2670},
pages = {12--20},
numpages = {8},
keywords = {Protonated primary organic amines Facilitated ion transfer Cyclic square wave voltammetry Liquid membranes},
}

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%0 Journal Article
%T Facilitated ion transfer of protonated primary organic amines studied by square wave voltammetry and chronoamperometry
%A E.Torralba
%A J.A. Ortuno
%A A.Molina
%A C. Serna
%A Karimian Azimi Saraf, Fereshteh
%J Analytica Chimica Acta
%@ 0003-2670
%D 2014

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