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首页> 外文会议>IEEE Sensors >Simultaneous detection of ascorbic acid and sulfur dioxide on a poly(3,4-ethylenedioxythiophene) covered gold electrode
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Simultaneous detection of ascorbic acid and sulfur dioxide on a poly(3,4-ethylenedioxythiophene) covered gold electrode

机译：在聚（3,4-乙撑二氧噻吩）覆盖的金电极上同时检测抗坏血酸和二氧化硫

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摘要

For wine industry, the quality of the produced wine is very important. Sulfur dioxide (SO2) is used as an antioxidant and preservative. But also ascorbic acid plays an important role in preventing oxidation. Therefore, there is a need for detecting these components in wines. Cyclic voltammetry was used to determine SO2 and ascorbic acid in a pH 3.3 model wine solution. In literature, modified electrodes showed advantages compared to bare electrodes. For this reason a gold electrode covered with poly(3,4-ethylenedioxythiophene) (PEDOT) was used. In the simultaneous presence, well defined separated current peaks for SO2 and ascorbic acid were detected, which proved the excellent suitability of the PEDOT covered gold electrode for precise determination. A linear relationship between concentration and peak current was observed.
机译：对于葡萄酒行业来说，所生产葡萄酒的质量非常重要。二氧化硫（SO 2 ）用作抗氧化剂和防腐剂。而且抗坏血酸在防止氧化中也起着重要的作用。因此，需要检测葡萄酒中的这些成分。使用循环伏安法测定pH 3.3模型酒溶液中的SO 2 和抗坏血酸。在文献中，与裸电极相比，修饰电极显示出优势。因此，使用了覆盖有聚（3,4-乙撑二氧噻吩）（PEDOT）的金电极。在同时存在的情况下，检测到明确定义的SO 2 和抗坏血酸的分离电流峰，证明了PEDOT包覆的金电极非常适合精确测定。观察到浓度和峰值电流之间的线性关系。

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