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Depósito Digital de Documentos de la UAB Encontrados 140 registros  anterior11 - 20siguientefinal  ir al registro: La búsqueda tardó 0.00 segundos. 
11.
7 p, 422.6 KB Experiences in the detection of drugs of abuse in smuggling seizures and forensic samples using electronic tongue principles / Cetó Alsedà, Xavier (Universitat Autònoma de Barcelona. Departament de Química) ; Bonet-SanEmeterio, Marta (Universitat Autònoma de Barcelona. Departament de Química) ; Ortiz, Dionisia (Universitat Autònoma de Barcelona. Departament de Química) ; Rodriguez-Franch, E. (Universitat Autònoma de Barcelona. Departament de Química) ; Valle Zafra, Manuel del (Universitat Autònoma de Barcelona. Departament de Química)
The application of voltammetric sensors to the analysis of illicit drugs in combination with different chemometric tools to achieve their identification and quantification is explored herein. The aim is to process the whole voltammograms obtained from different sensors as a unique profile, and analyze those with the aid of pattern recognition methods that allow the extraction of a characteristic fingerprint, rather than focusing on the oxidation peaks associated to each of the drugs. [...]
IEEE, 2022 - 10.1109/ISOEN54820.2022.9789611
2022 IEEE International Symposium on Olfaction and Electronic Nose (ISOEN), 2022, p. 1-4  
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12.
21 p, 861.0 KB Array of peptide-modified electrodes for the simultaneous determination of Pb(II), Cd(II) and Zn(II) / 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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13.
21 p, 861.4 KB Evaluation of red wines antioxidant capacity by means of a voltammetric e-tongue with an optimized sensor array / 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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14.
29 p, 618.9 KB Electronic tongues to assess wine sensory descriptors / 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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15.
40 p, 1.1 MB Computational design of molecularly imprinted polymer for direct detection of melamine in milk / Bates, Ferdia (Universitat Autònoma de Barcelona. Departament de Química) ; Busato, Mirko (University of Verona. Department of Biotechnology) ; Piletska, Elena (University of Leicester. Department of Chemistry) ; Whitcombe, Michael J. (University of Leicester. Department of Chemistry) ; Karim, Kal (University of Leicester. Department of Chemistry) ; Guerreiro, Antonio (University of Leicester. Department of Chemistry) ; Valle Zafra, Manuel del (Universitat Autònoma de Barcelona. Departament de Química) ; Giorgetti, Alejandro (University of Verona. Department of Biotechnology) ; Piletsky, Sergey (University of Leicester. Department of Chemistry)
A novel protocol for use of molecularly imprinted polymer (MIP) in analysis of melamine is presented. Design of polymer for melamine has been achieved using a combination of computational techniques and laboratory trials, the former greatly reducing the duration of the latter. [...]
2017 - 10.1080/01496395.2017.1287197
Separation Science and Technology, Vol. 52, Issue 8 (March 2017) , p. 1441-1453  
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16.
22 p, 444.8 KB Inhibition equivalency factors for microcystin variants in recombinant and wild-type protein phosphatase 1 and 2A assays / 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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17.
32 p, 1.7 MB Graphene electrode platform for impedimetric aptasensing / Aceta, Yara (Universitat Autònoma de Barcelona. Departament de Química) ; Valle Zafra, Manuel del (Universitat Autònoma de Barcelona. Departament de Química)
In this study, we synthesized graphene oxide (GO) at different oxidation times (30, 60 and 120 min) using a modified Hummer's method and investigated their carbon-to-oxygen (C/O) ratios, the % C-C double bond, the diffraction pattern, their topography and their electrochemical behaviour both by cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS). [...]
2017 - 10.1016/j.electacta.2017.01.113
Electrochimica acta, Vol. 229 (March 2017) , p. 458-466  
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18.
25 p, 639.0 KB Multivariate determination of total sugar content and ethanol in bioethanol production using carbon electrodes modified with MWCNT/MeOOH and chemometric data treatment / Cardoso de Sá, Acelino (Universitat Autònoma de Barcelona. Departament de Química) ; Cipri, Andrea (Universitat Autònoma de Barcelona. Departament de Química) ; González-Calabuig, Andreu (Universitat Autònoma de Barcelona. Departament de Química) ; Stradiotto, Nelson Ramos (Universidade Estadual Paulista. Departamento de Química Analítica) ; Valle Zafra, Manuel del (Universitat Autònoma de Barcelona. Departament de Química)
This work reports the characterization and application of a voltammetric electronic tongue using an array of glassy carbon electrodes modified with multi-walled carbon nanotubes containing metal (Pd, Au, Cu) and oxy-hydroxide nanoparticles (MetalsOOH of Ni, Co) towards the determination of total sugar content in products related with sugarcane-bioethanol production. [...]
2018 - 10.1002/elan.201700725
Electroanalysis, Vol. 30, issue 8 (Aug. 2018) , p. 1688-1697  
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19.
25 p, 1.0 MB Bioelectronic tongue using MIP sensors for the resolution of volatile phenolic compounds / Herrera-Chacon, Anna (Universitat Autònoma de Barcelona. Departament de Química) ; González-Calabuig, Andreu (Universitat Autònoma de Barcelona. Departament de Química) ; Campos, Inmaculada (Universitat Autònoma de Barcelona. Departament de Química) ; Valle Zafra, Manuel del (Universitat Autònoma de Barcelona. Departament de Química)
The proposed approach reports the combined advantages of biosensors made of molecularly imprinted polymers (MIPs) and the modelling capabilities of Artificial Neural Networks (ANN) in a bio-electronic tongue (BioET) analysis system for the very first time. [...]
2018 - 10.1016/j.snb.2017.11.136
Sensors and actuators. B, Chemical, Vol. 258 (April 2018) , p. 665-671  
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20.
16 p, 4.8 MB Quantitative Estimation of COD Values from an Array of Metal Nanoparticle Modified Electrodes and Artificial Neural Networks † / Wang, Qing (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)
Water quality monitoring has become critical in modern societies in multiple areas and at different stages. In this regard, chemical oxygen demand (COD) has become a key index in water testing, as it readily allows the determination of its overall quality and the presence of organic contaminants. [...]
2022 - 10.3390/chemosensors10120504
Chemosensors, Vol. 10, Issue 12 (December 2022) , art. 504  
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Depósito Digital de Documentos de la UAB : Encontrados 140 registros   anterior11 - 20siguientefinal  ir al registro:
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