2026-07-09T04:29:20Zhttps://riubu.ubu.es/oai/request

oai:riubu.ubu.es:10259/53302022-04-07T11:23:15Zcom_10259_4376com_10259_5086com_10259_2604col_10259_4377

Domínguez Renedo, Olga Navarro Cuñado, A. Marta Arnáiz Lozano, Víctor Alonso Lomillo, Mª Asunción 2020-06-08T12:45:54Z 2020-06-08T12:45:54Z 2020-01 0039-9140 http://hdl.handle.net/10259/5330 10.1016/j.talanta.2019.120351 This work describes the development of an electrochemical sensor based on a molecularly imprinted polymer (MIP) for sensitive and selective determination of 4-ethylphenol in wine. The sensor has been built by means of the electrosynthesis of the MIP on a glassy carbon electrode surface using cyclic voltammetry. The electropolymerization has been performed in the presence of 4-ethylphenol and pyrrole as template molecule and functional monomer, respectively. The influence of the molar ratios of template molecules to functional pyrrole monomers and the time needed to remove the template have been optimized taking into account the differential pulse voltammetric response of 4-ethylphenol. Under the optimal experimental conditions the developed MIP/GCE sensor shows good capability of detection (0.2 μM, α = β = 0.05) and reproducibility (3.0%) in the concentration range from 0.2 to 34.8 μM. The influence of possible interfering species in the analytical response has been studied and the sensor has successfully been applied to the determination of 4-ethylphenol in different wine samples. Junta de Castilla y León (BU018G19) application/pdf eng Elsevier Talanta. 2020, V. 207, 120351 https://doi.org/10.1016/j.talanta.2019.120351 info:eu-repo/grantAgreement/JCyL/BU018G19 Attribution-NonCommercial-NoDerivatives 4.0 Internacional http://creativecommons.org/licenses/by-nc-nd/4.0/ info:eu-repo/semantics/openAccess 4-ethylphenol Molecularly imprinted polymer Polypyrrole Electrochemical sensor Wine Química analítica Chemistry, Analytic Molecularly imprinted polypyrrole based electrochemical sensor for selective determination of 4-ethylphenol info:eu-repo/semantics/article info:eu-repo/semantics/acceptedVersion Talanta 207 120351