Artículo
Detection of oxytetracycline in honey using SERS on silver nanoparticles
González Fá, Alejandro Javier
; Pignanelli, Fernando; López Corral, Ignacio
; Faccio Sgiorovello, Ricardo Juan; Juan, Alfredo
; Di Nezio, Maria Susana
Fecha de publicación:
12/2019
Editorial:
Elsevier
Revista:
Trac-Trends In Analytical Chemistry
ISSN:
0165-9936
Idioma:
Inglés
Tipo de recurso:
Artículo publicado
Clasificación temática:
Resumen
In this work, we made a review about the application of Raman spectroscopy for quality control of honey and other food samples. Simultaneously, it was carried out a new research evaluating silver nanoparticles (AgNPs) obtained by green synthesis for detection of the antibiotic Oxytetracycline (OTC), through Surface Enhanced Raman Spectroscopy (SERS). Glucose was used as reducing and capping agent in the formation of AgNPs in alkaline media. The frequencies found, belonging to the antibiotic at 20, 15, 10 and 5 ppb, could be visibly differentiated from those corresponding to honey, being unnecessary to perform any extraction procedure or tedious manipulation of the sample. Theoretical frequencies were obtained by Density Functional Theory calculations and compared with the normal modes from SERS measures, founding an excellent agreement between them. The analysis shows a preference for the adsorption of OTC on silver cluster through oxygen atoms.
Palabras clave:
DFT
,
HONEY
,
OXYTETRACYCLINE
,
SERS
,
SILVER NANOPARTICLES
Archivos asociados
Licencia
Identificadores
Colecciones
Articulos(IFISUR)
Articulos de INSTITUTO DE FISICA DEL SUR
Articulos de INSTITUTO DE FISICA DEL SUR
Articulos(INQUISUR)
Articulos de INST.DE QUIMICA DEL SUR
Articulos de INST.DE QUIMICA DEL SUR
Citación
González Fá, Alejandro Javier; Pignanelli, Fernando; López Corral, Ignacio; Faccio Sgiorovello, Ricardo Juan; Juan, Alfredo; et al.; Detection of oxytetracycline in honey using SERS on silver nanoparticles; Elsevier; Trac-Trends In Analytical Chemistry; 121; 12-2019; 1-33
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