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8 p, 1.3 MB |
Fundamentals and application of voltammetric electronic tongues in quantitative analysis
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Cetó Alsedà, Xavier (Universitat Autònoma de Barcelona. Departament de Química) ;
Pérez, Sandra (Centro Nacional de Microelectrónica) ;
Prieto-Simón, Beatriz (Universitat Rovira i Virgili. Departament d'Enginyeria Electrònica, Elèctrica i Automàtica)
Electronic tongues (ETs) are bioinspired analytical tools based on the synergies between (bio)sensors and chemometrics. Through the application of chemometrics, it is possible to infer underlying relationships between the measured analytical signals and the chemical properties of the samples, both for descriptive and predictive purposes, otherwise impossible to decipher. [...]
2022 -  10.1016/j.trac.2022.116765
Trends in analytical chemistry, Vol. 157 (December 2022) , art. 116765
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21 p, 538.2 KB |
Development and application of an electronic tongue for detection and monitoring of nitrate, nitrite and ammonium levels in waters
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Nuñez, L. (Universidade Estadual Paulista. Instituto de Química. Departamento de Química Analítica (Brazil)) ;
Cetó Alsedà, Xavier (Universitat Autònoma de Barcelona. Departament de Química) ;
Pividori, María Isabel (Universitat Autònoma de Barcelona. Departament de Química) ;
Zanoni, Maria Valnice (Universidade Estadual Paulista. Instituto de Química. Departamento de Química Analítica (Brazil)) ;
Valle Zafra, Manuel del (Universitat Autònoma de Barcelona. Departament de Química)
This work presents the first study and development of an electronic tongue analysis system for the monitoring of nitrogen stable species: nitrate, nitrite and ammonium in water. The electronic tongue was composed of an array of 15 potentiometric poly(vinyl chloride) membrane sensors sensitive to cations and anions plus an artificial neural network (ANN) response model. [...]
2013 - 10.1016/j.microc.2013.04.018
Microchemical Journal, Vol. 110 (September 2013) , p. 273-279
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21 p, 861.4 KB |
Evaluation of red wines antioxidant capacity by means of a voltammetric e-tongue with an optimized sensor array
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Cetó Alsedà, Xavier (Universitat Autònoma de Barcelona. Departament de Química) ;
Apetrei, Constantin (Universitatea Dunărea de Jos. Departamentul de Chimie, Fizică și Mediu) ;
Valle Zafra, Manuel del (Universitat Autònoma de Barcelona. Departament de Química) ;
Rodríguez-Méndez, Maria Luz (Universidad de Valladolid. Departamento de Química Inorgánica)
In this work, two sets of voltammetric sensors -prepared using different strategies- have been combined in an electronic tongue to evaluate the complete antioxidant profile of red wines. To this aim, wine samples were analyzed with the whole set of sensors. [...]
2014 - 10.1016/j.electacta.2013.12.079
Electrochimica acta, Vol. 120 (Feb. 2014) , p. 180-186
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29 p, 618.9 KB |
Electronic tongues to assess wine sensory descriptors
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Cetó Alsedà, Xavier (University of South Australia. Future Industries Institute) ;
González-Calabuig, Andreu (Universitat Autònoma de Barcelona. Departament de Química) ;
Crespo, Nora (Universitat Autònoma de Barcelona. Departament de Química) ;
Pérez, Sandra (Universitat Autònoma de Barcelona. Departament de Química) ;
Capdevila Mestres, Josefa (INCAVI-IRTA. Estació de Viticultura i Enologia) ;
Puig-Pujol, Anna (INCAVI-IRTA. Estació de Viticultura i Enologia) ;
Valle Zafra, Manuel del (Universitat Autònoma de Barcelona. Departament de Química)
This work reports the application of an electronic tongue as a tool towards the analysis of wine in tasks such as its discrimination based on the maturing in barrels or the prediction of the global scores assigned by a sensory panel. [...]
2017 - 10.1016/j.talanta.2016.09.055
Talanta, Vol. 162 (January 2017) , p. 218-224
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29 p, 1.2 MB |
Voltammetric electronic tongue based on carbon paste electrodes modified with biochar for phenolic compounds stripping detection
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Kalinke, Cristiane (Universidad Federal de Paraná. Departamento de Química) ;
de Oliveira, Paulo Roberto (Universidad Federal de Paraná. Departamento de Química) ;
Bonet-SanEmeterio, Marta (Universitat Autònoma de Barcelona. Departament de Química) ;
González-Calabuig, Andreu (Universitat Autònoma de Barcelona. Departament de Química) ;
Valle Zafra, Manuel del (Universitat Autònoma de Barcelona. Departament de Química) ;
Salvio Mangrich, Antonio (Universidad Federal de Paraná. Departamento de Química) ;
Humberto Marcolino, Luiz (Universidad Federal de Paraná. Departamento de Química) ;
Bergamini, Márcio F. (Universidad Federal de Paraná. Departamento de Química)
Biochar is a charcoal produced from the biomass pyrolysis process that presents a highly porous and functionalized surface. In the present work an array of carbon paste electrodes (CPE) made of different forms of carbon (graphite, carbon nanotubes and activated biochar) was evaluated in the development of an electronic tongue for discrimination and stripping voltammetric determination of catechol (CAT), 4-ethylcatechol (4-EC) and 4-ethylguaiacol (4-EG) phenolic compounds. [...]
2019 - 10.1002/elan.201900072
Electroanalysis, Vol. 31, issue 11 (Nov. 2019) , p. 2238-2245
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