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dc.contributor.authorValera, Enrique-
dc.contributor.authorRamón-Azcón, Javier-
dc.contributor.authorRodríguez, Ángel-
dc.contributor.authorCastañer, Luis M.-
dc.contributor.authorSánchez Baeza, Francisco J.-
dc.contributor.authorMarco, María Pilar-
dc.date.accessioned2009-01-07T12:47:53Z-
dc.date.available2009-01-07T12:47:53Z-
dc.date.issued2007-03-03-
dc.identifier.citationSensors and Actuators B Chemical 125(2): 526-537 (2007)en_US
dc.identifier.issn0925-4005-
dc.identifier.urihttp://hdl.handle.net/10261/9463-
dc.description12 pages, 13 figures.-- Printed version published on Aug 8, 2007.en_US
dc.description.abstractA novel impedimetric immunosensor for atrazine detection, a widely used pesticide, is described. It is based on a two coplanar non-passivated interdigitated metallic μ-electrodes (IDμE) and the differential measurement of the impedance frequency spectrum. No redox electrodes have been included in the sensor. The chemical recognition layer was deposited on top of the interdigitated μ-electrodes area (fingers and inter-digits space). Immunochemical detection of the atrazine concentration is achieved by a competitive reaction without using any label. Furthermore immunoreagents specifically developed to detect this pesticide have been used.en_US
dc.description.abstractThe immunosensor and its functionalization steps have been characterized by means of chemical affinity methods and impedance spectroscopy. This work describes immunosensor development and its physico-chemical and analytical characterization. The immunosensor shows a limit of detection of 8.34 ± 1.37 μgL−1, which is lower than the Maximum Residue Level (MRL) (100 μgL−1) established by EU (European Union) for residues of atrazine as herbicide in the wine grapes and other foodstuff products.-
dc.description.sponsorshipThis work has been supported by the Ministry of Science and Technology (Contract numbers TEC2004-0121-E and TEC2004-06854-C03-03/MIC) and by the European Community (IST-2003-508774). The MNT group is a consolidated Grup de Recerca de la Generalitat de Catalunya since the year 2001 (expedient 00329).The AMR group is a consolidated Grup de Recerca de la Generalitat de Catalunya and has support from the Departament d’Universitats, Recerca i Societat de la Informació de la Generalitat de Catalunya (expedient 2005SGR 00207).en_US
dc.format.extent162 bytes-
dc.format.mimetypeapplication/msword-
dc.language.isoengen_US
dc.publisherElsevieren_US
dc.rightsclosedAccessen_US
dc.subjectImmunosensoren_US
dc.subjectImpedance spectroscopyen_US
dc.subjectInterdigitated μ-electrodesen_US
dc.subjectAtrazineen_US
dc.titleImpedimetric immunosensor for atrazine detection using interdigitated μ-electrodes (IDμE's)en_US
dc.typeartículoen_US
dc.identifier.doihttp://dx.doi.org/10.1016/j.snb.2007.02.048-
dc.description.peerreviewedPeer revieweden_US
dc.relation.publisherversionhttp://dx.doi.org/10.1016/j.snb.2007.02.048en_US
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