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Poly(pyrrole-EDTA like) modified electrodes for mercury ions electroanalysis

G.-O. BUICA1, E.-M. UNGUREANU1,* , C. BUCHER2, J.-C. MOUTET2, E. SAINT-AMAN2

Affiliation

  1. Faculty of Applied Chemistry and Material Sciences, University "Politehnica" of Bucharest, Gheorghe Polizu 1-7, 011031 Bucharest, Romania
  2. Université Joseph Fourier Grenoble 1, Département de Chimie Moléculaire, UMR CNRS-5250, Institut de Chimie Moléculaire de Grenoble, FR CNRS-2607, BP 53, 38041, Grenoble Cedex 9, France

Abstract

Complexing polymer-coated electrodes synthesized by oxidative electropolymerization of N,N′-ethylenebis[N-[(3-(pyrrole-1-yl)propyl) carbamoyl)methyl]-glycine] (L) were used for the electrochemical detection of Hg(II) ions by means of the chemical pre-concentration-anodic stripping technique. Competitive complexations of Hg(II) and Cu(II) or Hg(II) and Pb(II) into C/polyL modified electrodes of different film thicknesses were carried out using increasing pre-concentration times. Optimized conditions for mercury ions analysis with polyL films were established upon varying experimental parameters such as pH, reduction potential, and accumulation and reduction times. Imprinted polymer-coated electrodes prepared by electropolymerization of L in the presence of metal cations were used for mercury sensing..

Keywords

Poly(N,N'-ethylenebis[N-[(3-pyrrole-1-yl)propyl)carbamoyl)methyl]-glycine) modified electrodes, Hg(II) electroanalysis, Competitive complexation of Hg(II), Cu(II) and Pb (II), Anodic stripping voltammetry, Imprinted electrodes.

Submitted at: July 20, 2009
Accepted at: Aug. 7, 2009

Citation

G.-O. BUICA, E.-M. UNGUREANU, C. BUCHER, J.-C. MOUTET, E. SAINT-AMAN, Poly(pyrrole-EDTA like) modified electrodes for mercury ions electroanalysis, Journal of Optoelectronics and Advanced Materials Vol. 11, Iss. 8, pp. 1152-1159 (2009)