English   español  
Por favor, use este identificador para citar o enlazar a este item: http://hdl.handle.net/10261/9508
Compartir / Impacto:
Add this article to your Mendeley library MendeleyBASE
Citado 10 veces en Web of Knowledge®  |  Ver citas en Google académico
Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL
Exportar otros formatos: Exportar EndNote (RIS)Exportar EndNote (RIS)Exportar EndNote (RIS)

Single frequency impedimetric immunosensor for atrazine detection

Autor Rodríguez, Ángel; Valera, Enrique; Ramón-Azcón, Javier; Sánchez Baeza, Francisco J.; Marco, María Pilar; Castañer, Luis M.
Palabras clave Immunosensors
Impedance spectroscopy
Interdigitate μ-electrodes
Fecha de publicación 22-feb-2008
Citación Sensor and Actuators B Chemical 129(2):921-928 (2007)
ResumenA novel impedimetric immunosensor for the detection of a wide variety of compounds, based on a two coplanar non-passivated interdigitated metallic μ-electrodes and non-labeled immunoreactives, has been designed and developed. A very useful detection method is the impedance spectroscopy sweeping a wide frequency range. This is a powerful, but cumbersome tool to study the sensor performance providing trustworthy results. In this work, it is shown that the exploitation of the changes observed of the impedance at a single frequency provide very good correlation with antibody concentration and hence greatly reduces the signal acquisition and processing complexity. It has thereby a great potential for low cost, low power, fast response and simple use for the in-field or at-line applications. In this work, the application of the method to atrazine detection is described. The results show that the immunosensor signal is a function of the pesticide concentration following a competitive binding relationship, with limits of detection lower than the maximum residue level required by EC for atrazine in wine grapes and other foodstuff products.
Descripción 8 pages, 8 figures.-- Available online on Oct 10, 2007.
Versión del editorhttp://dx.doi.org/10.1016/j.snb.2007.10.003
URI http://hdl.handle.net/10261/9508
Aparece en las colecciones: (IQAC) Artículos
Ficheros en este ítem:
No hay ficheros asociados a este ítem.
Mostrar el registro completo

NOTA: Los ítems de Digital.CSIC están protegidos por copyright, con todos los derechos reservados, a menos que se indique lo contrario.