Abstract

PEREIRA, Arnaldo César; SANTOS, Antonio de Santana  and  KUBOTA, Lauro Tatsuo. Trends in amperometric electrodes modification for electroanalytical applications. Quím. Nova [online]. 2002, vol.25, n.6a, pp. 1012-1021. ISSN 0100-4042.  http://dx.doi.org/10.1590/S0100-40422002000600019.

The most relevant advances on the analytical applications of chemically modified electrodes (CME) are presented. CME have received great attention due to the possibility of electrode surface modification including chemisorption, composite generation and polymer coating. In recent years, the interest in CME has increased overall to improve the sensitivity and selectivity of the electroanalytical probes, considering the electron mediator incorporation and the new conducting polymers development. The general procedures employed for the electrode modification and the operational characteristics of some electrochemical sensors are discussed.

Keywords : modified electrodes; electroanalysis; biosensors.