2024-03-28T13:44:12Zhttps://riubu.ubu.es/oai/requestoai:riubu.ubu.es:10259/61302022-12-14T23:42:07Zcom_10259_3844com_10259_5086com_10259_2604col_10259_3845
Hernández Muñoz, Sheila
Perales Rondon, Juan Víctor
Arnaiz, Alvaro
Pérez Estébanez, Martín
Gomez, Elvira
Colina Santamaría, Álvaro
Heras Vidaurre, Aránzazu
2021-11-09T10:39:47Z
2021-11-09T10:39:47Z
2020-12
1572-6657
http://hdl.handle.net/10259/6130
10.1016/j.jelechem.2020.114743
Time resolved Raman spectroelectrochemistry is a powerful technique to prepare useful Surface Enhanced Raman Scattering (SERS) substrates suitable for quantitative analysis. Moreover, following the evolution of the Raman signal with the applied potential the selection of the best conditions for the analysis is quite simple. In this work, gold SERS substrates are prepared on screen-printed electrodes for the determination of nicotinamide, vitamin B3, in a multivitamin complex. The formation of the substrate has been monitored using UV/Vis absorption spectroelectrochemistry and scanning electron microscopy, which confirmed the generation of gold nanoparticles on the electrode surface. This new method has demonstrated to be suitable for the direct quantification of simple test samples using small sample volumes (50 μL). However, it failed when a complex sample, containing several interfering species, was analysed. A high interference on the preparation of the SERS substrate is observed during the analysis of a multivitamin complex. Despite that, nicotinamide was selectively determined in a multivitamin complex using the method of the standard addition, obtaining remarkable figures of merit (R2 = 0.99, %RSD < 9%).
Ministerio de Economía, y Competitividad (Grant CTQ2017-83935-R-AEI/FEDERUE), Junta de Castilla y León (Grant BU297P18) and Ministerio de Ciencia, Innovación y Universidades (Grant RED2018-102412-T). J.V.P-R. thanks Junta de Castilla y León for his postdoctoral fellowship (Grant BU033-U16)
application/pdf
spa
Elsevier
Journal of Electroanalytical Chemistry. 2020,
V. 879, 114743
https://doi.org/10.1016/j.jelechem.2020.114743
info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016/CTQ2017-83935-R/ES/ESPECTROELECTROQUIMICA RAMAN CUANTITATIVA
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//BU033-U16//Desarrollo de un equipo compacto de espectroelectroquímica Raman
info:eu-repo/grantAgreement/Junta de Castilla y León//BU297P18
Attribution-NonCommercial-NoDerivatives 4.0 Internacional
http://creativecommons.org/licenses/by-nc-nd/4.0/
info:eu-repo/semantics/openAccess
Spectroelectrochemistry
Vitamin B3
EC-SERS
Raman spectroscopy
Standard addition method
Química analítica
Chemistry, Analytic
Determination of nicotinamide in a multivitamin complex by electrochemical-surface enhanced Raman spectroscopy
info:eu-repo/semantics/article
info:eu-repo/semantics/acceptedVersion