Technical Sciences Vocational High School, Gazi University, Ankara 06374, Turkey.
Food Chem. 2020 Oct 30;328:127098. doi: 10.1016/j.foodchem.2020.127098. Epub 2020 May 20.
Poly(1H-1,2,4-triazole-3-thiol) (poly(T3T)) conductive film was coated successfully on the gold electrode (Au). The electrochemical behavior of vanillin (VAN) was studied on the 1H-1,2,4-triazole-3-thiol-Au (T3T-Au) electrode. The determination of VAN was performed on the T3T-Au electrode using a differential pulse voltammetry (DPV) technique. In order to detect the concentration of VAN, suitable supporting electrolyte solution and pH value were determined. At pH 3 in HClO solution, the anodic peak current of VAN obtained with the T3T-Au electrode is 4.3 times greater than the bare Au electrode. The response oxidation peak current and concentration of VAN showed a good linear relationship in the range of 0.1-11.3 µM. The limit of detection was found as 0.04 µM. Besides, the reproducibility, repeatability, stability, and interference measurements were also assayed. This sensor was applied successfully for the detection of VAN in synthetic samples and various food samples.
聚（1H-1,2,4-三氮唑-3-硫醇）（聚（T3T））导电膜成功地涂覆在金电极（Au）上。在 1H-1,2,4-三氮唑-3-硫醇-Au（T3T-Au）电极上研究了香草醛（VAN）的电化学行为。使用差分脉冲伏安法（DPV）技术在 T3T-Au 电极上测定 VAN。为了检测 VAN 的浓度，确定了合适的支持电解质溶液和 pH 值。在 HClO 溶液中 pH 为 3 时，T3T-Au 电极上获得的 VAN 的阳极峰电流比裸 Au 电极大 4.3 倍。在 0.1-11.3 μM 的范围内，VAN 的响应氧化峰电流与浓度呈现良好的线性关系。检测限被发现为 0.04 μM。此外，还测定了重现性、重复性、稳定性和干扰测量。该传感器成功地用于合成样品和各种食品样品中 VAN 的检测。
