Experimental Study and Mathematical Modeling of a Glyphosate Impedimetric Microsensor Based on Molecularly Imprinted Chitosan Film - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Chemosensors Année : 2020

Experimental Study and Mathematical Modeling of a Glyphosate Impedimetric Microsensor Based on Molecularly Imprinted Chitosan Film

Résumé

A novel impedimetric microsensor based on a double-layered imprinted polymer film has been constructed for the sensitive detection of the herbicide, glyphosate (GLY), in water. It is based on electropolymerized polypyrrole films, doped with cobaltabis(dicarbollide) ions ([3,3′-Co(1,2-C2B9H11)2]), as a solid contact layer between the gold microelectrode surface and the molecularly imprinted chitosan film (CS-MIPs/PPy/Au). Electrochemical Impedance Spectroscopy (EIS) was used for the characterization of the CS-molecular imprinted polymers (MIPs)/PPy/Au in the presence of GLY concentrations between 0.31 pg/mL and 50 ng/mL. Experimental responses of CS-MIPs/PPy/Au are modeled for the first time using an exact mathematical model based on physical theories. From the developed model, it was possible to define the optimal range of the parameters that will impact the quality of impedance spectra and then the analytical performance of the obtained microsensor. The obtained microsensor shows a low detection limit of 1 fg/mL (S/N = 3), a good selectivity, a good reproducibility, and it is regenerable
Fichier principal
Vignette du fichier
2020-Zouaoui-chemosensors-08-00104.pdf (4.22 Mo) Télécharger le fichier
Origine : Fichiers éditeurs autorisés sur une archive ouverte

Dates et versions

hal-03140046 , version 1 (12-02-2021)

Identifiants

Citer

Fares Zouaoui, Saliha Bourouina-Bacha, Mustapha Bourouina, Albert Alcacer, Joan Bausells, et al.. Experimental Study and Mathematical Modeling of a Glyphosate Impedimetric Microsensor Based on Molecularly Imprinted Chitosan Film. Chemosensors, 2020, 8 (4), pp.104. ⟨10.3390/chemosensors8040104⟩. ⟨hal-03140046⟩
50 Consultations
60 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More