El pròxim dijous 7 de maig, el Dipòsit Digital no estarà operatiu de 8:00 a 12:00 h per tasques d'actualització. Disculpeu les molèsties.
El próximo jueves 7 de mayo, el Dipòsit Digital no estará operativo de 8:00 a 12:00 h debido a tareas de actualización. Disculpen las molestias.
Our digital repository will be temporarily unavailable on Thursday, May 7th, from 8:00 a.m. to 12:00 p.m. due to a system update.
 
Miniatura

Fitxers

670593.pdf (347.16 KB)

Tipus de document

Article

Versió

Versió acceptada

Data de publicació

2017-03

Tots els drets reservats

Si us plau utilitzeu sempre aquest identificador per citar o enllaçar aquest document: https://hdl.handle.net/2445/139356

A voltammetric electronic tongue based on commercial screen-printed electrodes for the analysis of aminothiols by differential pulse voltammetry

Títol de la revista

Autors

Director/Tutor

ISSN de la revista

Títol del volum

Recurs relacionat

https://doi.org/10.1002/elan.201700053

Resum

A voltammetric electronic tongue has been designed as a proof of concept for the analysis of aminothiols by differential pulse voltammetry and has been tested in ternary mixtures of cysteine (Cys), homocysteine (hCys) and glutathione (GSH). It consists of three screen-printed electrodes of carbon, carbon nanofibers and gold cured at low temperature. A preliminary calibration study carried out separately for each aminothiol confirmed that, working at an optimal pH value of 7.4, every electrode produces differentiated responses for every analyte (cross-response). As for the tongue, it was applied to calibration and validation mixtures of Cys, hCys and GSH and provided voltammograms that, baseline-corrected, normalized and combined in different ways were submitted to partial least squares (PLS) calibration. The calibration models produced good predictions of the concentrations of all three analytes, which suggest that the proposed voltammetric tongue improves the performance of a previous design based on linear sweep voltammetric measurements under acidic conditions.

Matèries

Voltametria, Electroquímica

Matèries (anglès)

Voltammetry, Electrochemistry

Citació

Col·leccions

Articles publicats en revistes (Enginyeria Química i Química Analítica)

Citació

PÉREZ RÀFOLS, Clara, GÓMEZ, Ana, SERRANO I PLANA, Núria, DÍAZ CRUZ, José manuel, ARIÑO BLASCO, Cristina, ESTEBAN I CORTADA, Miquel. A voltammetric electronic tongue based on commercial screen-printed electrodes for the analysis of aminothiols by differential pulse voltammetry. _Electroanalysis_. 2017. Vol. 29, núm. 1559 -1565. [consulta: 5 de maig de 2026]. ISSN: 1040-0397. [Disponible a: https://hdl.handle.net/2445/139356]

Exportar metadades

JSON - METS

Compartir registre