A novel microelectrode array combining screen-printing and femtosecond laser ablation technologies: Development, characterization and application to cadmium detection

C. Cugnet (1) , O. Zaouak , A. Rene , Christophe Pécheyran (1) , M. Potin-Gautier (1) , L. Authier (1)

1 LCABIE - Laboratoire de Chimie Analytique Bio-Inorganique et Environnement

The elaboration of a new kind of microelectrode array based on femtosecond laser ablation and screen-printing process was reported. The electrochemical behavior of this sensor, constituted by a square array of 8 × 8 screen-printed carbon-based microelectrodes, was characterized by cyclic voltammetry (CV) and compared with macroelectrodes. With an interelectrode distance-to-electrode diameter ratio of 21, this screen-printed microelectrode array (SPμEA) has shown a superior diffusion behavior and a greater mass-transport. The analytical performances of this mercury modified SPμEA were evaluated for cadmium detection. Promising results were obtained with synthetic cadmium solutions in acetate buffer by square-wave anodic stripping voltammetry (SWASV) technique with a detection limit of 1.3 μg L-1 and were confirmed with application to a river sample. © 2009 Elsevier B.V. All rights reserved.

Domaines: Chimie analytique

C. Cugnet, O. Zaouak, A. Rene, Christophe Pécheyran, M. Potin-Gautier, et al.. A novel microelectrode array combining screen-printing and femtosecond laser ablation technologies: Development, characterization and application to cadmium detection. Sensors and Actuators B: Chemical, 2009, 143 (1), pp.158-163. ⟨10.1016/j.snb.2009.07.059⟩. ⟨hal-01561280⟩