RT info:eu-repo/semantics/article
T1 Carbon paste electrodes made from different carbonaceous materials: application in the study of antioxidants
A1 Rodríguez Méndez, María Luz
A1 Apetrei, Constantin
A1 Saja Sáez, José Antonio de
A1 Apetrei, Irina Mirela
K1 Carbon paste electrode
K1 Electrodos de pasta de carbono
K1 Carbonaceous materials
K1 Materiales carbonáceos
K1 Carbon nanotubes
K1 Nanotubos de carbono
K1 Cyclic voltammetry
K1 Voltametría cíclica
AB This work describes the sensing properties of carbon paste electrodes (CPEs) prepared from three different types of carbonaceous materials: graphite, carbon microspheres and carbon nanotubes. The electrochemical responses towards antioxidants including vanillic acid, catechol, gallic acid, L-ascorbic acid and L-glutathione have been analyzed and compared. It has been demonstrated that the electrodes based on carbon microspheres show the best performances in terms of kinetics and stability, whereas G-CPEs presented the smallest detection limit for all the antioxidants analyzed. An array of electrodes has been constructed using the three types of electrodes. As demonstrated by means of Principal Component Analysis, the system is able to discriminate among antioxidants as a function of their chemical structure and reactivity.
PB MDPI
SN 1424-8220
YR 2011
FD 2011
LK http://uvadoc.uva.es/handle/10324/30775
UL http://uvadoc.uva.es/handle/10324/30775
LA eng
NO Sensors, 2011, vol. 11, n. 2. p. 1328-1344
NO Producción Científica
DS UVaDOC
RD 22-dic-2024