Novel all-solid-state copper(II) microelectrode based on a dithiomacrocycle as a neutral carrier

I. A. Marques de Oliveira, M. Pla-Roca, Ll Escriche, J. Casabó, N. Zine, J. Bausells, F. Teixidor, E. Crespo, A. Errachid, J. Samitier

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28 Citations (Scopus)

Abstract

A novel dithiomacrocycle (4-phenyl-11-decanoyl-1,7-dithia-11-azacyclotetradecane-4-sulfide) has been synthesized and used as a new ionophore in order to develop a plasticized poly(vinyl chloride) membrane for copper ion detection. The performance of these novel planar copper(II)-selective potentiometric microelectrodes was investigated using potentiometric measurements. The developed microelectrodes exhibits a good linear response of 29.5 ± 1 mV per decade within the concentration range of 1.0 × 10-6 to 1.0 × 10-2 M (r = 0.9995) of Cu2+. The detection limit was determined as 5.62 × 10-7 M and the selectivity coefficients for possible interfering cations were evaluated. The microelectrodes are suitable for use with aqueous solutions of pH 3.5-6.0 and were found to be insensitive to the nature of the anions used in the sample. © 2006 Elsevier Ltd. All rights reserved.
Original languageEnglish
Pages (from-to)5070-5074
JournalElectrochimica Acta
Volume51
Issue number24
DOIs
Publication statusPublished - 15 Jul 2006

Keywords

  • Copper(II)
  • Ionophore
  • Macrocycle
  • Microelectrodes
  • Poly(vinyl chloride)

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