RT info:eu-repo/semantics/article
T1 Gel polymer electrolyte-based dual screen-printed electrodes for the headspace quantification of 4-ethylphenol and ethanethiol simultaneously in wines
A1 Portugal Gómez, Paula
A1 Domínguez Renedo, Olga
A1 Alonso Lomillo, Mª Asunción
K1 4-Ethylphenol
K1 Ethanethiol
K1 Wine analysis
K1 Dual screen-printed carbon electrodes
K1 Gas sensor
K1 Gas-phase amperometry
K1 Room temperature ionic liquid
K1 Química
K1 Chemistry
K1 Química analítica
K1 Chemistry, Analytic
K1 Alimentos
K1 Food
AB The identification and correction of negative factors, such as 4-ethylphenol and ethanethiol, is important to comply with food safety regulations and avoid economic losses to wineries. A simple amperometric measurement procedure that facilitates the simultaneous quantification of both compounds in the gas phase has been developed using fullerene and cobalt (II) phthalocyanine-modified dual screen-printed electrodes coated with a room temperature ionic liquid-based gel polymer electrolyte. The replacement of the typical aqueous supporting electrolyte by low-volatility ones improves both operational and storage lifetime. Under the optimum conditions of the experimental variables, Britton Robinson buffer pH 5 and applied potentials of + 0.86 V and + 0.40 V for each working electrode (vs. Ag ref. electrode), reproducibility values of 7.6% (n = 3) for 4-ethylphenol and 6.6% (n = 3) for ethanethiol were obtained, as well as capability of detection values of 23.8 μg/L and decision limits of 1.3 μg/L and 9.2 μg/L (α = β = 0.05), respectively. These dual electrochemical devices have successfully been applied to the headspace detection of both compounds in white and red wines, showing their potential to be routinely used for rapid analysis control in wineries.
PB Springer
SN 0026-3672
YR 2024
FD 2024
LK http://hdl.handle.net/10259/10026
UL http://hdl.handle.net/10259/10026
LA eng
NO Open Access funding provided thanks to the CRUE-CSIC agreement with Springer Nature. This research was supported by the Agencia Estatal de Investigación/Ministerio de Ciencia e Innovación (PID2020-117095RB-I00/AEI/https://doi.org/10.13039/501100011033).
DS Repositorio Institucional de la Universidad de Burgos
RD 30-ene-2025