2026-05-30T12:49:42Zhttps://riubu.ubu.es/oai/requestoai:riubu.ubu.es:10259/61302022-12-14T23:42:07Zcom_10259_3844com_10259_5086com_10259_2604col_10259_3845
Repositorio Institucional de la Universidad de Burgos
author
Hernández Muñoz, Sheila
author
Perales Rondon, Juan Víctor
author
Arnaiz, Alvaro
author
Pérez Estébanez, Martín
author
Gomez, Elvira
author
Colina Santamaría, Álvaro
author
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%).
spa
Attribution-NonCommercial-NoDerivatives 4.0 Internacional
Spectroelectrochemistry
Vitamin B3
EC-SERS
Raman spectroscopy
Standard addition method
Determination of nicotinamide in a multivitamin complex by electrochemical-surface enhanced Raman spectroscopy
info:eu-repo/semantics/article
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URL
https://riubu.ubu.es/bitstream/10259/6130/1/Hernandez-jec_2020.pdf
File
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1325200
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Hernandez-jec_2020.pdf