English   español  
Please use this identifier to cite or link to this item: http://hdl.handle.net/10261/148725
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:


Highly sensitive ratiometric quantification of cyanide in water with gold nanoparticles via Resonance Rayleigh Scattering

AuthorsHernandez, Yulán; Coello, Yves; Fratila, Raluca M.; Fuente, Jesús M. de la; Lionberger, Troy A.
KeywordsCyanide detection
Chemical sensors
Analytical methods
UV–Vis absorption spectroscopy
Gold nanoparticles
Resonance Rayleigh Scattering
Issue Date2017
CitationTalanta 167: 51-58 (2017)
AbstractA highly sensitive and selective ratiometric sensor for the quantification of cyanide (CN) in aqueous samples has been developed using spherical gold nanoparticles (AuNPs) stabilized by polysorbate 40 (PS-40). Three different AuNP sizes (14, 40 and 80 nm mean diameters) were used to evaluate the response of the sensor using both colorimetric and Resonance Rayleigh Scattering (RRS) detection schemes. The best results were obtained for the sensor using 40 nm AuNPs, for which the limits of detection (LODs) were found to be 100 nmol L in a benchtop instrument and 500 nmol L by the naked eye, values well below the maximum acceptable level for drinking water (1.9 µmol L) set by the World Health Organization (WHO). The practical use of the 40 nm-AuNPs RRS sensor was demonstrated with the determination of CN in drinking and fresh waters. Finally, the sensor was successfully implemented in a compact portable device consisting of two light-emitting diodes (LEDs) and a miniature spectrometer, turning this sensor into a very potent tool for its application as a quick routine field-deployable analytical method.
Identifiersdoi: 10.1016/j.talanta.2017.02.006
issn: 0039-9140
e-issn: 1873-3573
Appears in Collections:(ICMA) Artículos
Files in This Item:
File Description SizeFormat 
accesoRestringido.pdf15,38 kBAdobe PDFThumbnail
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.