Journal of the Brazilian Chemical Society, ( ISI ), Volume (26), No (5), Year (2015-6) , Pages (963-969)

Title : ( Construction of a New Aluminum(III) Cation Selective Electrode Based on 12-Crown-4 as an Ionophore )

Authors: masoomeh esmaelpourfarkhani , Glamhossein Ronagi , Mohammad Hossein Arbab Zavar ,

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Abstract

This article describes the fabrication of a novel and selective polyvinylchloride (PVC) membrane potentiometric sensor for Al3+ cation based on 12-crown-4 (12C4) as an ionophore. The electrode was prepared by coating the surface of a graphite rod by a membrane containing PVC as a plastic matrix, dibutylphthalate (DBP) as plasticizer, 12C4 as an ionophore and oleic acid (OA) as an additive. Under optimized membrane composition, the constructed electrochemical sensor exhibited a Nernstian response for Al3+ cation concentration, ranging from 1.0 × 10-6 to 1.0 × 10-1 mol L-1 with a detection limit of 5.5 × 10-7 mol L-1 and a slope of 19.0 ± 0.4 mV per decade at 25 °C. The constructed potentiometric sensor showed a relatively fast response time (15 s), good reproducibility and stability, and high selectivity towards Al3+ cation in solutions. The proposed sensor was successfully used as an indicator electrode in potentiometric titration and also in the direct determination of this metal cation in real samples.

Keywords

, aluminum(III) cation, 12-crown-4, ion-selective electrode, potentiometry
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@article{paperid:1048412,
author = {Esmaelpourfarkhani, Masoomeh and Ronagi, Glamhossein and Arbab Zavar, Mohammad Hossein},
title = {Construction of a New Aluminum(III) Cation Selective Electrode Based on 12-Crown-4 as an Ionophore},
journal = {Journal of the Brazilian Chemical Society},
year = {2015},
volume = {26},
number = {5},
month = {June},
issn = {0103-5053},
pages = {963--969},
numpages = {6},
keywords = {aluminum(III) cation; 12-crown-4; ion-selective electrode; potentiometry},
}

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%0 Journal Article
%T Construction of a New Aluminum(III) Cation Selective Electrode Based on 12-Crown-4 as an Ionophore
%A Esmaelpourfarkhani, Masoomeh
%A Ronagi, Glamhossein
%A Arbab Zavar, Mohammad Hossein
%J Journal of the Brazilian Chemical Society
%@ 0103-5053
%D 2015

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