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    Electrochemical Determination of Cu (II) Ions by 4-Formylphenylboronic Acid Modified Gold Electrode

    Year: 2011

    Journal: Electroanalysis 2011, 23 (7) pp 1645-1653, 20121211

    Authors: Yasemin Oztekin, Almira Ramanaviciene, Arunas Ramanavicius

    Organizations: Selcuk University, Faculty of Science, Department of Chemistry, Konya, Turkey, Vilnius University, Faculty of Chemistry, Nano-Technas, Center of Nanotechnology and Materials Science, Vilnius, Lithuania, Vilnius University, Faculty of Chemistry, Department of Physical Chemistry, Vilnius, Lithuania

    A self-assembled monolayer (SAM) modified by 4-formylphenylboronic acid was formed on the gold electrode, which was applied for the determination of trace concentrations of Cu(II). The formation of advanced SAM on the gold electrode was evidenced by electrochemical impedance spectroscopy, atomic force microscopy and contact angle measurements. Electrochemical determination of Cu(II) ions was performed by square wave voltammetry. Some mutual interferences caused by Cd(II), Co(II), Fe(II), Ni(II) and Pb(II) ions were investigated and it was demonstrated how the negative effects of these interfering ions could be eliminated by adjustment of proper parameters of square wave voltammetry.