A new modified carbon-paste electrode

for electrochemical analysis

H. El Bakouri1*, A. Ouassini1, J. L. Hidalgo-Hidalgo-de-Cisneros2,

J. M. Palacios-Santander2, I. Naranjo-Rodríguez2, L. Cubillana-Aguilera2

1 Department of Chemical Engineering, Faculty of Sciences and Technology,

University of Abdelmalek Essaadi, 90000 Tangier, Morocco.

2 Department of Analytical Chemistry, Faculty of Sciences, University of Cadiz, 11510 Puerto Real, Cadiz, Spain

* Corresponding author. E-mail:elbakouri@fstt.ac.ma

Received : 07 January 2005; revised version accepted: 20 October 2005

Abstract

This study demonstrates the utility of carbon paste electrode modified with C18 for the electrochemical determination of Cu(II) in aqueous medium by using Differential Pulse Anodic Stripping Voltammetry (DPASV). The electrode exhibits a linear response to Cu(II) over a wide concentration range. The fabrication process of the quoted modified electrode is very simple and fast, as well as its cleaning procedure. It has a high degree of repeatability of the measurements. The detection limit of this electrode determined in the range of 4 -9·10-4 mg/l is 4·10-5 mg/l.

Keywords: Octadecyl; Copper; Modified Carbon-Paste Electrode; DPASV.

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