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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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18 p, 880.2 KB |
A combination of dynamic measurement protocol and advanced data treatment to resolve the mixtures of chemically similar analytes with potentiometric multisensor system
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Kirsanov, Dmitry (St. Petersburg State University. Chemistry Department) ;
Cetó Alsedà, Xavier (Universitat Autònoma de Barcelona. Departament de Química) ;
Khaydukova, Maria (St. Petersburg State University. Chemistry Department) ;
Blinova, Yulia (St. Petersburg State University. Chemistry Department) ;
Valle Zafra, Manuel del (Universitat Autònoma de Barcelona. Departament de Química) ;
Babain, Vasily (Khlopin Radium Institute) ;
Legin, Andrey (St. Petersburg State University. Chemistry Department)
Data processing techniques and measuring protocol are very important parts of the multisensor systems methodology. Complex analytical tasks like resolving the mixtures of two components with very similar chemical properties require special attention. [...]
2014 - 10.1016/j.talanta.2013.11.003
Talanta, Vol. 119 (February 2014) , p. 226-231
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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, 861.0 KB |
Array of peptide-modified electrodes for the simultaneous determination of Pb(II), Cd(II) and Zn(II)
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Serrano i Plana, Núria (Universitat de Barcelona. Departament de Química Analítica) ;
Prieto-Simón, Beatriz (Universitat Autònoma de Barcelona. Departament de Química) ;
Cetó Alsedà, Xavier (Universitat Autònoma de Barcelona. Departament de Química) ;
Valle Zafra, Manuel del (Universitat Autònoma de Barcelona. Departament de Química)
This paper reports the development of three peptide modified sensors in which glutathione (GSH) and its fragments Cys-Gly and γ-Glu-Cys were immobilized respectively through aryl diazonium electrochemical grafting onto the surface of graphite-epoxy composite electrodes (GEC), and used for the simultaneous determination of Cd(II), Pb(II) and Zn(II). [...]
2014 - 10.1016/j.talanta.2014.02.052
Talanta, Vol. 125 (Jul. 2014) , p. 159-166
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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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22 p, 444.8 KB |
Inhibition equivalency factors for microcystin variants in recombinant and wild-type protein phosphatase 1 and 2A assays
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Garibo, Diana (Institut de Recerca i Tecnologia Agroalimentàries) ;
Flores, Cintia (Institut de Diagnòstic Ambiental i Estudis de l'Aigua) ;
Cetó Alsedà, Xavier (Universitat Autònoma de Barcelona. Departament de Química) ;
Prieto-Simón, Beatriz (Universitat Autònoma de Barcelona. Departament de Química) ;
Valle Zafra, Manuel del (Universitat Autònoma de Barcelona. Departament de Química) ;
Caixach, Josep (Institut de Diagnòstic Ambiental i Estudis de l'Aigua) ;
Diogène, Jorge (Institut de Recerca i Tecnologia Agroalimentàries) ;
Campàs i Homs, Mònica (Institut de Recerca i Tecnologia Agroalimentàries)
In this work, protein phosphatase inhibition assays (PPIAs) have been used to evaluate the performance of recombinant PP1 and recombinant and wild-type PP2As. The enzymes have been compared using microcystins-LR (MC-LR) as a model cyanotoxin. [...]
2014 - 10.1007/s11356-014-3065-7
Environmental Science and Pollution Research International, Vol. 21, Issue 18 (September 2014) , p. 10652-10660
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