English   español  
Please use this identifier to cite or link to this item: http://hdl.handle.net/10261/12346
logo share SHARE logo core CORE   Add this article to your Mendeley library MendeleyBASE

Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL
Exportar a otros formatos:


Quantitative detection of doping substances by a localised surface plasmon sensor

AuthorsKreuzer, Mark P.; Quidant, Romain; Badenes, Gonçal; Marco, María Pilar
KeywordsOptical sensing
Localised surface plasmons
Issue Date15-Jan-2006
CitationBiosensors & Bioelectronics 21(7): 1345-1349 (2006)
AbstractWithin this communication, consistent evidence of a quantitative biosensing principle for steroidal residue analysis is presented. Our approach uses a simple method for the quantitative determination of an anabolic agent called stanozolol (Sz). Sz (Mw 328) is widely used in sports, horse racing and as a growth promoter in animals for human consumption. Through the use of localised surface plasmons (LSPs), sustained by three-dimensional noble metal nano-structures, we have developed a highly specific, label-less immunosensor for the detection of this small organic molecule to low levels (nM range). A main practical advantage over conventional flat extended film surface plasmon resonance (SPR) systems is the simplicity of the optical configuration, since there is no need for cumbersome total internal reflection illumination, thus making integration easier. In addition, the active area of the LSP-based sensor is smaller, decreasing the minimum detectable number of molecules involved in the binding event. Assay times are short and the set-up is comprised of relatively cheap instrumentation. Detection levels found here are comparable with SPR, even at this early stage of development and with further modifications, we envisage sensing down to pM (10−12) levels.
Description5 pages, 2 figures.
Publisher version (URL)http://dx.doi.org/10.1016/j.bios.2005.04.019
Appears in Collections:(IQAC) Artículos
Files in This Item:
There are no files associated with this item.
Show full item record
Review this work

Related articles:

WARNING: Items in Digital.CSIC are protected by copyright, with all rights reserved, unless otherwise indicated.