Selective detection of dopamine in presence of ascorbic acid by use of glassy-carbon electrode modified with amino-beta-cyclodextrin and carbon nanotubes

Abstract : A glassy carbon electrode modified with per-6-amino-beta-cyclodextrin (beta-CDNH2) and functionalized single-walled carbon nanotubes (SWCNT-COOH) was elaborated. This structure was investigated for the detection of dopamine acid (DA) in presence of ascorbic acid (AA). The sensor behavior was studied by cyclic voltammetry, square wave voltammetry and electrochemical impedance spectroscopy. The analysis results show that the electrode modification with CD derivative improves the sensitivity and selectivity of the DA recognition; the electrochemical response was further improved by introduction of SWCNT-COOH. The sensor shows good and reversible linear response toward DA within the concentration range of 7 x 10(-7)-10(-4) M with a detection limit of 5 x 10(-7) M
Type de document :
Article dans une revue
Electroanalysis, Wiley-VCH Verlag, 2014, 26 (12), pp.2747-2753. 〈10.1002/elan.201400477〉
Liste complète des métadonnées

https://hal.archives-ouvertes.fr/hal-01230127
Contributeur : Agnès Bussy <>
Soumis le : mardi 17 novembre 2015 - 18:18:22
Dernière modification le : mercredi 12 septembre 2018 - 10:00:07

Lien texte intégral

Identifiants

Collections

Citation

Aymen Gaied, Nejmeddine Jaballah, Monce Tounsi, Mohamed Braiek, Nicole Jaffrezic-Renault, et al.. Selective detection of dopamine in presence of ascorbic acid by use of glassy-carbon electrode modified with amino-beta-cyclodextrin and carbon nanotubes. Electroanalysis, Wiley-VCH Verlag, 2014, 26 (12), pp.2747-2753. 〈10.1002/elan.201400477〉. 〈hal-01230127〉

Partager

Métriques

Consultations de la notice

106