Sensors 2011, 11(2), 1328-1344; doi:10.3390/s110201328
Article

Carbon Paste Electrodes Made from Different Carbonaceous Materials: Application in the Study of Antioxidants

1email, 2email, 2email and 3,* email
Received: 23 December 2010; Accepted: 20 January 2011 / Published: 25 January 2011
(This article belongs to the Special Issue Bioinspired Sensor Systems)
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Abstract: 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.
Keywords: carbon paste electrode; carbonaceous material; carbon nanotube; cyclic voltammetry; antioxidant
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MDPI and ACS Style

Apetrei, C.; Apetrei, I.M.; Saja, J.A.D.; Rodriguez-Mendez, M.L. Carbon Paste Electrodes Made from Different Carbonaceous Materials: Application in the Study of Antioxidants. Sensors 2011, 11, 1328-1344.

AMA Style

Apetrei C, Apetrei IM, Saja JAD, Rodriguez-Mendez ML. Carbon Paste Electrodes Made from Different Carbonaceous Materials: Application in the Study of Antioxidants. Sensors. 2011; 11(2):1328-1344.

Chicago/Turabian Style

Apetrei, Constantin; Apetrei, Irina Mirela; Saja, Jose Antonio De; Rodriguez-Mendez, Maria Luz. 2011. "Carbon Paste Electrodes Made from Different Carbonaceous Materials: Application in the Study of Antioxidants." Sensors 11, no. 2: 1328-1344.

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