基于电化学激活玻碳电极的日落黄高灵敏度电化学传感器。
Highly Sensitive Electrochemical Sensor for Sunset Yellow Based on Electrochemically Activated Glassy Carbon Electrode.
机构信息
Key Laboratory of Crop Physiology, Ecology and Genetic Breeding, Ministry of Education, Key Laboratory of Chemical Utilization of Plant Resources of Nanchang, College of Chemistry and Materials, Jiangxi Agricultural University, Nanchang 330045, China.
出版信息
Molecules. 2022 Aug 16;27(16):5221. doi: 10.3390/molecules27165221.
Electrochemically activated glassy carbon electrode (AGCE) was fabricated and applied for sensitive and selective detection of sunset yellow (SY). The electroanalysis of SY was investigated by square wave voltammetry (SWV). Owed to the specific oxygen-contained functional groups and the outstanding conductivity of AGCE, the proposed sensor exhibits an enhanced oxidation peak current of SY when compared with non-activated glass carbon electrode (GCE). Under the optimal analytical conditions, the oxidation peak current is linear with SY concentration in the range of 0.005-1.0 μM. The low limit of detection is 0.00167 μM (S/N = 3). This method is applied for the detection of SY in the actual samples. The recovery is between 96.19 and 103.47%, indicating that AGCE is suitable for the determination of SY in beverage sample.
电化学激活玻碳电极（AGCE）被制备并应用于检测日落黄（SY）的灵敏和选择性。通过方波伏安法（SWV）对 SY 的电化学分析进行了研究。由于 AGCE 具有特定的含氧官能团和出色的导电性，与非激活玻碳电极（GCE）相比，所提出的传感器显示出 SY 的氧化峰电流增强。在最佳分析条件下，氧化峰电流在 0.005-1.0 μM 的范围内与 SY 浓度呈线性关系。检测限低至 0.00167 μM（S/N = 3）。该方法用于实际样品中 SY 的检测。回收率在 96.19%至 103.47%之间，表明 AGCE 适用于饮料样品中 SY 的测定。
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