Autor segons l'article: Bartolome, Joanne P; Fragoso, Alex
Departament: Enginyeria Química
Autor/s de la URV: Fragoso Sierra, Alex
Paraules clau: Vitamin-c Uric-acid Surfaces Spectrophotometric determination Reduction Oxidation Nitrate Nanotubes Cured meat Chemistry
Resum: 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.
Àrees temàtiques: 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
Accès a la llicència d'ús: https://creativecommons.org/licenses/by/3.0/es/
Adreça de correu electrònic de l'autor: alex.fragoso@urv.cat
Identificador de l'autor: 0000-0003-4839-6094
Data d'alta del registre: 2024-10-12
Versió de l'article dipositat: info:eu-repo/semantics/acceptedVersion
Enllaç font original: https://www.sciencedirect.com/science/article/abs/pii/S0020169317303134
URL Document de llicència: https://repositori.urv.cat/ca/proteccio-de-dades/
Referència a l'article segons font original: Inorganica Chimica Acta. 468 223-231
Referència 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 de l'article: 10.1016/j.ica.2017.06.024
Entitat: Universitat Rovira i Virgili
Any de publicació de la revista: 2017
Tipus de publicació: Journal Publications
Repositori URV