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Título:
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Detection of Histamine Dihydrochloride at Low Concentrations Using Raman Spectroscopy Enhanced by Gold Nanostars Colloids
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Autores:
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Kolosovas Machuca, Eleazar Samuel ;
Cuadrado Conde, Alexander ;
Ojeda Galván, Hiram Joazet ;
Ortiz Dosal, Luis Carlos ;
Hernández Arteaga, Aida Catalina ;
Rodríguez Aranda, María del Carmen ;
Navarro Contreras, Hugo Ricardo ;
Alda, Javier ;
González Contreras, Francisco Javier
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Tipo de documento:
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texto impreso
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Editorial:
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MDPI, 2019-02-06
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Dimensiones:
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application/pdf
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Nota general:
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cc_by
info:eu-repo/semantics/openAccess
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Idiomas:
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Palabras clave:
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Estado = Publicado
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Materia = Ciencias: Física: Optica
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Materia = Ciencias Biomédicas: Óptica y optometría: Técnicas de la imagen
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Tipo = Artículo
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Resumen:
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In this paper, we report a fast and easy method to detect histamine dihydrochloride using gold nanostars in colloidal aqueous solution as a highly active SERS platform with potential applications in biomedicine and food science. This colloid was characterized with SEM and UV–Vis spectroscopy. Also, numerical calculations were performed to estimate the plasmonic resonance and electric field amplification of the gold nanoparticles to compare the difference between nanospheres and nanostars. Finally, aqueous solutions of histamine dihydrochloride were prepared in a wide range of concentrations and the colloid was added to carry out SERS. We found SERS amplified the Raman signal of histamine by an enhancement factor of 1.0 × 10 7 , demonstrating the capability of the method to detect low concentrations of this amine molecule.
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En línea:
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https://eprints.ucm.es/51299/1/ALda_nanomaterials-09-00211-v2.pdf
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