The presentedwork shows the preparation of screenprinted electrodes modified with a lead (PbF-SPE) film for adsorptive stripping voltammetric determination of cobalt ions in real samples. The metallic film was deposited in situ on the surface of the graphite SPE (GSPE). The conditions for the determination of cobalt in the form of dimethylglioximate complexes, including the concentration of the complexing agent and the instrumental parameters, were optimized. The limit of detection for cobalt determination was 3.8 ng/mL. These studies were complemented with a voltammetric characterization by using the reversible redox couple ferrocyanide/ferricyanide, to assess for the investigation of each step of the analytical procedure for the metal-based platform.
A Portable Electrochemical Platform for Cobalt Detection In-Field / Selvolini G.; Nuzzo M.; Melean B.; Casian M.; Hosu O.; Cristea C.; Marrazza G.. - ELETTRONICO. - 999:(2023), pp. 71-76. (Intervento presentato al convegno 21st National Conference on Sensors and Microsystems, AISEM 2022) [10.1007/978-3-031-25706-3_12].
A Portable Electrochemical Platform for Cobalt Detection In-Field
Selvolini G.;Nuzzo M.;Hosu O.;Marrazza G.
2023
Abstract
The presentedwork shows the preparation of screenprinted electrodes modified with a lead (PbF-SPE) film for adsorptive stripping voltammetric determination of cobalt ions in real samples. The metallic film was deposited in situ on the surface of the graphite SPE (GSPE). The conditions for the determination of cobalt in the form of dimethylglioximate complexes, including the concentration of the complexing agent and the instrumental parameters, were optimized. The limit of detection for cobalt determination was 3.8 ng/mL. These studies were complemented with a voltammetric characterization by using the reversible redox couple ferrocyanide/ferricyanide, to assess for the investigation of each step of the analytical procedure for the metal-based platform.
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