2026-04-18T02:51:56Zhttps://riubu.ubu.es/oai/request

oai:riubu.ubu.es:10259/74802023-04-17T11:22:49Zcom_10259_3844com_10259_5086com_10259_2604com_10259_3843com_10259_3591com_10259.4_106col_10259_3845col_10259_6162

Hernández Muñoz, Sheila García, Lydia Pérez Estébanez, Martín Cheuquepan Valenzuela, William Heras Vidaurre, Aránzazu Colina Santamaría, Álvaro 2023-03-01T13:21:11Z 2023-03-01T13:21:11Z 2022-08 1572-6657 http://hdl.handle.net/10259/7480 10.1016/j.jelechem.2022.116478 A new, simple and fast protocol to generate gold-based SERS substrates is presented in this work. Melamine is a compound widely used in the industry that can be toxic for humans if consumed even in low concentrations. EC-SERS is an excellent alternative to classical methods to detect and quantify this compound because Raman spectroscopy provides a fingerprint of the molecules, providing very good sensitivity. In this work, timeresolved Raman spectroelectrochemistry is employed to generate a SERS substrate and to detect melamine, all in a single experiment. The dynamic character of this technique provides valuable information about the interaction of the molecule with the generated substrate. An optimization of the spectroelectrochemical method based on a multi-pulse amperometric detection has been performed. The new protocol presented in this work shows significant figures of merit in a very short experiment time, just 25 s. Authors acknowledge the financial support from Agencia Estatal de Investigación/Ministerio de Ciencia e Innovacion /10.13039/ 501100011033 (Grant PID2020-113154RB-C21) and Ministerio de Ciencia, Innovación y Universidades (Grant RED2018-102412-T). W. Ch. thanks JCyL for his postdoctoral fellowship (Grant BU297P18). S.H. and M.P-E. thank JCyL and European Social Fund for their predoctoral fellowships. eng Elsevier Journal of Electroanalytical Chemistry. 2022, V. 918, 116478 https://doi.org/10.1016/j.jelechem.2022.116478 info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020/PID2020-113154RB-C21/ES/APLICACION DE NUEVOS MATERIALES Y DISPOSITIVOS PARA EC-SERS Y EC-SOERS/ info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020/RED2018-102412-T/ES/RED DE SENSORES Y BIOSENSORES ELECTROQUIMICOS/ info:eu-repo/grantAgreement/Junta de Castilla y León//BU297P18//Fusión de técnicas espectroelectroquímicas avanzadas/ Atribución 4.0 Internacional http://creativecommons.org/licenses/by/4.0/ info:eu-repo/semantics/openAccess EC-SERS Gold-electrodes Time-resolved spectroelectrochemistry Raman Melamine Química analítica Chemistry, Analytic Multiamperometric-SERS detection of melamine on gold screen-printed electrodes info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Journal of Electroanalytical Chemistry 918