Carbon-Based Electrodes for Sensitive Electroanalytical Determination of Aminonaphthalenes

Abstract

The electroanalytical performance of bare glassy carbon electrodes (GCE) for the determination of 1-aminonaphthalene (1-AN) and 2-aminonaphthalene (2-AN) was compared with GCE modified by a Nafion permselective membrane or multiwalled carbon nano-tubes and with other types of carbon-based materials, carbon film and boron doped diamond. Nafion-modified GCE gave the highest sensitivity and lowest detection limit (0.4 mu mol L (-1)) for differential pulse voltammetric determination of 1-AN.

Electrochemical impedance spectroscopy gave information about the processes at the electrode surface. Simultaneous determination of 1-AN and 2-AN in a mixture at GCE and their determination in model samples of river water is presented.

Keywords

• Aminonaphthalenes
• Carbon electrode materials
• Nafion
• Multiwalled carbon nanotubes
• Differential pulse voltammetry
• Electrochemical impedance spectroscopy