Autor según el artículo: Bartolome, Joanne P; Fragoso, Alex
Departamento: Enginyeria Química
Autor/es de la URV: Fragoso Sierra, Alex
Palabras clave: Vitamin-c Uric-acid Surfaces Spectrophotometric determination Reduction Oxidation Nitrate Nanotubes Cured meat Chemistry
Resumen: In this work, we evaluate two novel surfaces for the simultaneous detection of nitrite and ascorbic acid in aqueous media. Glassy carbon electrodes were first modified with small carbon nano-onions (GCE/CNO) and further functionalized either by electrografting ortho-aminophenol (oAP) groups or by physical adsorption of thionine to give electroactive surfaces that were characterized by cyclic voltammetry. The modified surfaces exhibited a fast electrochemical response and were able to detect the presence of nitrite and ascorbic acid by amperometry. The presence of both CNOs and the electroactive moiety on the electrode surface enhanced the sensitivity and lowered the limit of detection of the determinations as compared to GCE modified only with oAP or thionine. The CNO-modified electrodes showed good reproducibility and stability with time and were applied in the detection of ascorbic acid in orange juice.
Áreas temáticas: Zootecnia / recursos pesqueiros Química Physical and theoretical chemistry Medicina ii Medicina i Materials chemistry Materiais Interdisciplinar Inorganic chemistry Farmacia Engenharias ii Engenharias i Ciências biológicas ii Ciências biológicas i Ciências ambientais Ciências agrárias i Ciência de alimentos Chemistry, inorganic & nuclear Biotecnología Biodiversidade Astronomia / física
Acceso a la licencia de uso: https://creativecommons.org/licenses/by/3.0/es/
Direcció de correo del autor: alex.fragoso@urv.cat
Identificador del autor: 0000-0003-4839-6094
Fecha de alta del registro: 2024-10-12
Versión del articulo depositado: info:eu-repo/semantics/acceptedVersion
Enlace a la fuente original: https://www.sciencedirect.com/science/article/abs/pii/S0020169317303134
URL Documento de licencia: https://repositori.urv.cat/ca/proteccio-de-dades/
Referencia al articulo segun fuente origial: Inorganica Chimica Acta. 468 223-231
Referencia de l'ítem segons les normes APA: Bartolome, Joanne P; Fragoso, Alex (2017). Electrochemical detection of nitrite and ascorbic acid at glassy carbon electrodes modified with carbon nano-onions bearing electroactive moieties. Inorganica Chimica Acta, 468(), 223-231. DOI: 10.1016/j.ica.2017.06.024
DOI del artículo: 10.1016/j.ica.2017.06.024
Entidad: Universitat Rovira i Virgili
Año de publicación de la revista: 2017
Tipo de publicación: Journal Publications
Repositori URV