Resolution of Glycerol, Ethanol and Methanol Employing a Voltammetric Electronic Tongue
de Oliveira, João Pedro Jenson (Universitat Autònoma de Barcelona. Departament de Química)
Bonet-SanEmeterio, Marta (Universitat Autònoma de Barcelona. Departament de Química)
Cardoso de Sá, Acelino (University of São Paulo. Department of Physics and Materials Science)
Cetó Alsedà, Xavier (Universitat Autònoma de Barcelona. Departament de Química)
Lataro Paim, Leonardo (São Paulo State University. Department of Energy Engineering)
Valle Zafra, Manuel del (Universitat Autònoma de Barcelona. Departament de Química)

Data:	2024
Resum:	This paper reports the use of nanoparticles (NPs)-modified voltammetric sensors for the rapid determination of glycerol in the presence of ethanol and methanol, which are used in the transesterification reaction of biodiesel production. Two different modified electrodes have been prepared to form the electronic tongue (ET): copper hexacyanoferrate NPs obtained by chemical synthesis and mixed into graphite/epoxy (GEC) electrode, and nickel hydroxide NPs electrodeposited in reduced graphene oxide onto a GEC electrode. The response characteristics of these electrodes were first evaluated by building the respective calibration against glycerol, ethanol, and methanol. The electrodes demonstrated good stability during their analytical characterization, while principal component analysis confirmed the differentiated response against the different alcohols. Finally, the quantification of mixtures of these substances was achieved by a genetic algorithm-artificial neural networks (GA-ANNs) model, showing satisfactory agreement between expected and obtained values.
Ajuts:	Agencia Estatal de Investigación PID2022-136709OB-C21 Agència de Gestió d'Ajuts Universitaris i de Recerca 2021/SGR-00124
Drets:	Aquest document està subjecte a una llicència d'ús Creative Commons. Es permet la reproducció total o parcial, la distribució, la comunicació pública de l'obra i la creació d'obres derivades, fins i tot amb finalitats comercials, sempre i quan es reconegui l'autoria de l'obra original.
Llengua:	Anglès
Document:	Article ; recerca ; Versió publicada
Matèria:	Electronic tongue ; Nanoparticles modifiers ; Glycerol ; Biodiesel ; Artificial neural networks
Publicat a:	Chemosensors, Vol. 12, Issue 9 (September 2024) , art. 173, ISSN 2227-9040

DOI: 10.3390/chemosensors12090173

12 p, 4.8 MB

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