Gold nanoparticle-based amperometric sensors integrating a gel polymer membrane electrolyte for the headspace determination of ethanethiol in wines

IF 5.6 3区材料科学 Q1 ELECTROCHEMISTRY

Electrochimica Acta Pub Date : 2025-01-15 DOI:10.1016/j.electacta.2025.145710

Begoña Molinero-Abad , Maria Trachioti , Mamas I. Prodromidis , Olga Domínguez-Renedo , M. Asunción Alonso-Lomillo

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Abstract

The evaluation of different gold nanoparticles (AuNPs) modified screen-printed carbon electrodes (SPCEs) for the determination of ethanethiol in wine is presented in this work. Two procedures, electrochemical and spark discharge modification, have been tested for depositing AuNPs onto the working electrode surface. A gel polymer membrane, based on the mixture of 1-n‑butyl‑3-methylimidazolium hexafluorophosphate (BMIM-PF₆) and poly(vinylidene fluoride) (PVDF) in dimethyl sulfoxide, has been incorporated as a supporting electrolyte for the amperometric determination of the analyte in the gas phase. The developed sensors demonstrated high selectivity and sensitivity, having a detection capability of 80 μg/L (α = β = 0.05). They also exhibited a high degree of precision, with reproducibility values ranging from 0.3 to 7.6%. The different AuNP/SPCEs integrating a gel polymer membrane electrolyte have been successfully applied to the headspace amperometric determination of ethanethiol in various wine samples.

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集成凝胶聚合物膜电解质的金纳米粒子安培传感器用于葡萄酒中乙硫醇的顶空测定

本文研究了不同金纳米粒子修饰的网印碳电极（SPCEs）对葡萄酒中乙硫醇的测定效果。已经测试了电化学和火花放电改性两种方法，用于在工作电极表面沉积aunp。一种凝胶聚合物膜，基于二甲亚砜中1-正丁基-3-甲基咪唑六氟磷酸盐（bmm - pf6）和聚偏氟乙烯（PVDF）的混合物，已被纳入作为支持电解质，用于气相分析物的安培测定。该传感器具有较高的选择性和灵敏度，检测能力为80 μg/L （α = β = 0.05）。他们还表现出高度的精度，再现值从0.3到7.6%不等。结合凝胶聚合物膜电解质的不同AuNP/ spce已成功应用于各种葡萄酒样品中乙硫醇的顶空安培测定。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Electrochimica Acta 工程技术-电化学

CiteScore

11.30

自引率

6.10%

发文量

1634

审稿时长

41 days

期刊介绍： Electrochimica Acta is an international journal. It is intended for the publication of both original work and reviews in the field of electrochemistry. Electrochemistry should be interpreted to mean any of the research fields covered by the Divisions of the International Society of Electrochemistry listed below, as well as emerging scientific domains covered by ISE New Topics Committee.