RT info:eu-repo/semantics/article
T1 Simultaneous determination of 4-ethylphenol and 4-ethylguaicol on C60 modified dual screen-printed electrochemical sensors
A1 Portugal Gómez, Paula
A1 Alonso Lomillo, Mª Asunción
A1 Domínguez Renedo, Olga
K1 Dual screen-printed electrodes
K1 Fullerene C60
K1 4-Ethylphenol
K1 4-Ethylguaicol
K1 Wine
K1 Química analítica
K1 Chemistry, Analytic
K1 Química física
K1 Chemistry, Physical and theoretical
AB 4-ethylphenol and 4-ethylguaicol levels in wine are associated to organoleptic defects that cause consumer rejection accompanied by significant economic losses for producers. Thus, electrochemical sensors based on screen-printed carbon electrodes (SPCEs) modified with activated fullerene C60 (AC60) have been developed for the analysis of both phenols by direct headspace amperometric measurements. Upon optimization of the experimental variables affecting the sensors performance, the AC60/SPCE sensors presented linearity ranges from 9.9 to 65.4 μg/L and from 19.6 to 107.1 μg/L for 4-ethylphenol and 4-ethylguaicol, respectively. The achieved detection capacities were 10.3 μg/L (4-ethylphenol) and 19.6 μg/L (4-ethylguaicol), with a reproducibility of 6.3 % and 9.1 % (n = 3), respectively. In addition, dual-working AC60/SPCE devices were developed for the simultaneous analysis of both phenols using different working potentials for each electrode. The dual systems were successfully applied in the analysis of different spiked wine samples, obtaining good recoveries ranging from 94 to 108 %.
PB Elsevier
SN 0039-9140
YR 2024
FD 2024-04-01
LK http://hdl.handle.net/10259/9291
UL http://hdl.handle.net/10259/9291
LA eng
NO Authors would like to acknowledge funding from Agencia Estatal de Investigación/Ministerio de Ciencia e Innovación (PID2020-117095RB-I00/AEI/10.13039/501100011033).
DS Repositorio Institucional de la Universidad de Burgos
RD 01-jul-2024