To access the full text documents, please follow this link: http://hdl.handle.net/2117/12012

Immunosensors for atrazine detection in red wine samples
Valera Cano, Enrique Andrés; Rodríguez Martínez, Ángel; Azcón, J.R.; Sánchez Baeza, Francisco J.; Marco Colas, María Pilar
Universitat Politècnica de Catalunya. Departament d'Enginyeria Electrònica; Universitat Politècnica de Catalunya. MNT - Grup de Recerca en Micro i Nanotecnologies
Two novel immunosensors, one impedimetric and other one conductimetric, for atrazine detection in red wine samples have been developed. Impedimetric immunosensor is based on an array of interdigitated μ- electrodes (IDμEs) and bioreagents specifically developed to detect this pesticide. Conductimetric immunosensor incorporates additionally gold nanoparticles. Bioreagents were covalently immobilized on the surface of the electrodes (interdigital space). In both cases the biochemical determination of atrazine is possible without any redox mediator. For the case of the impedimetric immunosensor, the detection method is based on impedimetric measurements (in a wide range of frequencies), whereas in the case of the conductimetric immunosensor the detection method is based on conductimetric measurements (DC measurements).The potential of the impedimetric immunosensor to analyze atrazine in complex sample matrices, such as red wine, have been evaluated. This immunosensor can detect atrazine with limits of detection in the order sub-ppb, far below the maximum residue level (MRL) (50 μg L−1) established by European Union (EU) for residues of this herbicide in the wine grapes.
Peer Reviewed
Àrees temàtiques de la UPC::Enginyeria agroalimentària::Agricultura::Viticultura
Àrees temàtiques de la UPC::Enginyeria química::Química agrícola::Plaguicides
Atrazine -- Detection
Interdigitated μ-electrodes
Impedance spectroscopy
Food safety
Atrazina
Herbicides -- Detecció
Vi i vinificació -- Anàlisi
info:eu-repo/semantics/publishedVersion
info:eu-repo/semantics/conferenceObject
         

Show full item record

Related documents

Other documents of the same author

Valera Cano, Enrique Andrés; Ramón-Azcón, Javier; Sánchez Baeza, Francisco J.; Marco Colas, María Pilar; Rodríguez Martínez, Ángel
Valera Cano, Enrique Andrés; Ramón-Azcón, Javier; Barranco, Alejandro; Alfaro, Begoña; Sánchez Baeza, Francisco J.; Marco Colas, María Pilar; Rodríguez Martínez, Ángel
Sánchez Terrones, Benjamin; Vega Bru, Didac; Rodríguez Martínez, Ángel; Bragós Bardia, Ramon; Marco Colas, María Pilar; Valera Cano, Enrique Andrés
Rodríguez Martínez, Ángel; Valera Cano, Enrique Andrés
 

Coordination

 

Supporters