2026-04-17T20:44:31Zhttps://riubu.ubu.es/oai/request

oai:riubu.ubu.es:10259/50242022-04-29T12:02:48Zcom_10259_4313com_10259_5086com_10259_2604col_10259_4314

00925njm 22002777a 4500 dc Bustamante, Saúl E. . author Vallejos Calzada, Saúl author Pascual Portal, Blanca Sol author Muñoz Santamaría, María Asunción author Mendía Jalón, Aránzazu author Rivas, Bernabé L. . author García García, Félix Clemente author García Pérez, José Miguel author 2019-03 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) 0304-3894 http://hdl.handle.net/10259/5024 10.1016/j.jhazmat.2018.11.066 Polymeric sensors Film shaped sensors Colorimetric sensors Phenol sensors Polymer films containing chemically anchored diazonium salts with long-term stability as colorimetric sensors