Simultaneous quantification of 4-ethylphenol and ethanethiol in wines by headspace amperometric measurements
Simultaneous analysis of 4-ethylphenol and ethanethiol has been carried out since they often coexist in wine samples producing significant organoleptic defects. Dual working screen-printed electrodes have been used for this aim. An activated fullerene C60 modified screen-printed carbon electrode (AC...
| Autores: | , , |
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| Tipo de recurso: | artículo |
| Estado: | Versión publicada |
| Fecha de publicación: | 2024 |
| País: | España |
| Institución: | Universidad de Burgos (UBU) |
| Repositorio: | Repositorio Institucional de la Universidad de Burgos (RIUBU) |
| OAI Identifier: | oai:riubu.ubu.es:10259/9287 |
| Acceso en línea: | http://hdl.handle.net/10259/9287 |
| Access Level: | acceso abierto |
| Palabra clave: | 4-Ethylphenol Ethanethiol Wine Amperometry Dual screen-printed carbon electrodes Gas sensor Chemistry, Analytic Chemistry, Physical and theoretical Química analítica Química física |
| Sumario: | Simultaneous analysis of 4-ethylphenol and ethanethiol has been carried out since they often coexist in wine samples producing significant organoleptic defects. Dual working screen-printed electrodes have been used for this aim. An activated fullerene C60 modified screen-printed carbon electrode (AC60/SPCE1) was used for the determination of 4-ethylphenol, while a cobalt (II) phthalocyanine modified SPCE (CoPh/SPCE2) was employed for ethanethiol detection. Headspace amperometric measurements were performed applying different potentials to the electrode system, which were coated by a commercial polyamide membrane immersed in supporting electrolyte, for the simultaneous and selective detection of both species in a single run. The constructed sensing dual system presented an exceptional detection performance with a capacity of detection of 2.7 mg/L and 0.2 mg/L for 4-ethyphenol and ethanethiol, respectively. The developed method was successfully applied for the simultaneous detection of both compounds in wine samples where it demonstrated a high degree of trueness and suitable efficiency. |
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