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Título : Polymer films containing chemically anchored diazonium salts with long-term stability as colorimetric sensors
Autor : Bustamante, Saúl E. .
Vallejos Calzada, Saúl
Pascual Portal, Blanca Sol
Muñoz Santamaría, María Asunción
Mendía Jalón, Aránzazu
Rivas, Bernabé L. .
García García, Félix Clemente
García Pérez, José Miguel
Publicado en: Journal of Hazardous Materials. 2019, V. 365, p. 725-732
Editorial : Elsevier
Fecha de publicación : mar-2019
Fecha de disponibilidad: 5-mar-2021
ISSN : 0304-3894
DOI: 10.1016/j.jhazmat.2018.11.066
Resumen : We have prepared polymeric films as easy-to-handle sensory materials for the colorimetric detection and quantification of phenol derivatives (phenols) in water. Phenols in water resources result from their presence in pesticides and fungicides, among other goods, and are harmful ecotoxins. Colorless polymeric films with pendant diazonium groups attached to the acrylic polymer structure were designed and prepared for use as sensory matrices to detect phenol-derived species in water. Upon dipping the sensory films into aqueous media, the material swells, and if phenols are present, they react with the diazonium groups of the polymer to render a highly colored azo group, giving rise to the recognition phenomenon. The color development can be visually followed for a qualitative determination of phenols. Additionally, quantitative analysis can be performed by two different techniques: a) by using a UV–vis spectrophotometer (limit of detection of 0.12 ppm for 2-phenylphenol) and/or b) by using a smartphone with subsequent RGB analysis (limit of detection of 30 ppb for 2-phenylphenol)
Palabras clave: Polymeric sensors
Film shaped sensors
Colorimetric sensors
Phenol sensors
Licencia: https://creativecommons.org/licenses/by-nc-nd/4.0/
URI : http://hdl.handle.net/10259/5024
Versión del editor: https://doi.org/10.1016/j.jhazmat.2018.11.066
Aparece en las colecciones: Artículos POLYMERS

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