title: Voltammetric determination of trace mercury at a sonogel-carbon electrode modified with poly-3-methylthiophene.
abstract: The sonogel-carbon electrode is a new class of sol-gel electrode that exhibit favourable mechanics and electrics properties to be used as electrochemical sensor. In this paper, a modified sonogel-carbon electrode is proposed to determine mercury at trace levels. The modified electrode is obtained by electropolymerization of 3-methylthiophene on the surface of a bare sonogel-carbon electrode. This electrode shows high selectivity and sensitivity and linear response towards Hg(II), with a detection limit of 1.4x10(-3)mgl(-1). The electrode is reusable by a simple chemical cleaning procedure. No deterioration was observed in the electrode response during at least 1 week of successive measurements.
authors.affiliation: Equipe de recherché Bioelectrochemie et Systèmes Interfaciaux, University Abdelmalek Essaadi, Morocco.
authors.forename: Hanane
authors.initials: H
authors.lastname: Zejli
authors.forename: Patrick
authors.initials: P
authors.lastname: Sharrock
authors.forename: J L
authors.initials: JL
authors.lastname: Hidalgo-Hidalgo de Cisneros
authors.forename: I
authors.initials: I
authors.lastname: Naranjo-Rodriguez
authors.forename: Khalid R
authors.initials: KR
authors.lastname: Temsamani