Nickel hydroxide electrodes as amperometric detectors for carbohydrates in flow injection analysis and liquid chromatography

Autor(es)

Vidotti, Marcio ^{[1, 2]} ; Cerri, Carolina D. ^[1] ; Carvalhal, Rafaela F. ^{[1, 2]} ; Dias, Jailson C. ^{[1, 2]} ; Mendes, Renata K. ^{[1, 2]} ; Cordoba de Torresi, Susana I. ^{[3, 2]} ; Kubota, Lauro T. ^{[1, 2]}

Afiliação do(s) autor(es)

^[1] Univ Estadual Campinas, Inst Quim, BR-13083970 Campinas, SP - Brazil

^[2] Inst Nacl Ciencia & Tecnol Bioanalit, BR-13083970 Campinas, SP - Brazil

^[3] Univ Sao Paulo, Inst Quim, BR-05513970 Sao Paulo - Brazil

• Tipo de documento: Artigo Científico
• Fonte: JOURNAL OF ELECTROANALYTICAL CHEMISTRY; v. 636, n. 1-2, p. 18-23, NOV 15 2009.
• Citações Web of Science: 49

Resumo

The present paper describes the utilization of nickel hydroxide modified electrodes toward the catalytic oxidation of carbohydrates (glucose, fructose, lactose and sucrose) and their utilization as electrochemical sensor. The modified electrodes were employed as a detector in flow injection analysis for individual carbohydrate detection, and to an ionic column chromatography system for multi-analyte samples aiming a prior separation step. Kinetic studies were performed on a rotating disk electrode (RDE) in order to determine both the heterogeneous rate constant and number of electrons transferred for each carbohydrate. Many advantages were found for the proposed system including fast and easy handling of the electrode modification, low cost procedure, a wide range of linearity (0.5-50 ppm), low detection limits (ppb level) and high sensitivities. (C) 2009 Elsevier B.V. All rights reserved. (AU)

• Processo FAPESP: 06/05003-4 - Desenvolvimento de biossensores baseados na interação antígeno-anticorpo para a detecção precoce de ferrugem asiática na soja
• Beneficiário: Renata Kelly Mendes Valente
• Modalidade de apoio: Bolsas no Brasil - Pós-Doutorado
• Processo FAPESP: 06/03960-1 - Desenvolvimento e validação de método para determinação simultânea de íons cobre, ferro, sódio, nitrato e acetato em etanol combustível utilizando cromatografia de íons
• Beneficiário: Jailson Cardoso Dias
• Modalidade de apoio: Bolsas no Brasil - Doutorado