The electrochemical determination of phenolic derivates using multiple pulsed amperometry with graphite based electrodes

Adriana Bebeselea; Florica Manea; Georgeta Burtica; Livia Nagy; Geza Nagy

doi:10.1016/j.talanta.2009.07.036

The electrochemical determination of phenolic derivates using multiple pulsed amperometry with graphite based electrodes

Talanta. 2010 Jan 15;80(3):1068-72. doi: 10.1016/j.talanta.2009.07.036.

Authors

Adriana Bebeselea¹, Florica Manea, Georgeta Burtica, Livia Nagy, Geza Nagy

Affiliation

¹ Politehnica University of Timisoara, P-ta Victoriei no. 2, 300006 Timisoara, Romania. adriana.bebeselea@chim.upt.ro

PMID: 20006054
DOI: 10.1016/j.talanta.2009.07.036

Abstract

The electrochemical determinations of 4-chlorophenol (4-CP) and 4-nitrophenol (4-NP) by chronoamperometry (CA) and multiple pulsed amperometry (MPA) using expanded graphite-epoxy composite (EG-Epoxy) and rotating spectral graphite disc (SG) electrodes are reported. The electrochemical behaviours of both electrodes in the presence of organics informed about oxidation peak potential and the electrode fouling with organics concentration increasing. Setting up the oxidation peak potential as detection potential, only SG gave good electroanalytical performance using CA. However, by MPA applying both electrodes exhibited the capability to assess electrochemically and quantitatively the pollutants from aqueous solutions. UV spectrometric method detecting 4-CP and 4-NP at lambda=280nm and lambda=398nm wavelength, respectively was used for validation and parallel determinations.

Publication types

Research Support, Non-U.S. Gov't