INQUIMAE 12526
INSTITUTO DE QUIMICA, FISICA DE LOS MATERIALES, MEDIOAMBIENTE Y ENERGIA
Unidad Ejecutora - UE
artículos
Título:
Electrochemical sensor for thiourea focused on metallurgical applications of copper
Autor/es:
SÁNCHEZ-LOREDO, M. G.; MENDEZ DE LEO, LUCILA PAULA; GRACIELA A. GONZALEZ; PEDRE, IGNACIO; FERNANDO BATTAGLINI
Revista:
SENSORS AND ACTUATORS B-CHEMICAL
Editorial:
ELSEVIER SCIENCE SA
Referencias:
Lugar: Amsterdam; Año: 2016 vol. 232 p. 383 - 389
ISSN:
0925-4005
Resumen:
A simple and reliable device is presented for the direct monitoring of thiourea in copper electrorefinerybaths as a tool for reconditioning of industrial baths, and so reducing its environmental impact. For thispurpose, a screen-printed graphite electrode is modified with silver nanoparticles (AgNPs) contained ina polyelectrolyte-surfactant matrix. The AgNPs are able to adsorb the thiourea, improving the sensitivityof the electrode toward this analyte, even in the presence of usual additives (Avitone®and glue). Thesystem allows the determination of thiourea in a range of 1?10 mg/L. A coupled electrochemical and IRanalysis is proposed to evaluate the involved mechanism.
