Abstract

In the present study an electrochemical sensor has been produced for measuring riboflavin with high sensitivity and selectivity. Deferential pulse technique has been used to measure the current of riboflavin on the modified glassy carbon electrode. At first, the synthesis of the GO/Au/polyEAmVS nanocomposite was performed. Synthetic nanocomposite was characterized by TEM and XRD methods and it was used for modification of glassy carbon electrode. Effective conditions were optimized for the measurement of riboflavin including pH and buffer concentration and modifier concentration. Calibration curve was linear in the concentration range of 1.0–100.0 μM under optimal conditions. A detection limit of 7.2 × 10^–2 μM and relative standard deviation of 3.79% have been obtained. The prepared sensor has a good performance for measuring the amount of riboflavin in drink real samples.

中文翻译：

---

新型电化学传感器的测定饮料中真实样品中核黄素的含量

摘要

在本研究中，已经产生了用于以高灵敏度和选择性测量核黄素的电化学传感器。差分脉冲技术已用于测量修饰的玻碳电极上核黄素的电流。首先，进行GO / Au / polyEAmVS纳米复合材料的合成。用TEM和XRD方法对合成的纳米复合材料进行了表征，并将其用于修饰玻碳电极。优化了用于测量核黄素的有效条件，包括pH，缓冲液浓度和改性剂浓度。在最佳条件下，浓度范围为1.0–100.0μM时，校准曲线呈线性。检出限为7.2×10 ^–2已获得μM和3.79％的相对标准偏差。所制备的传感器具有良好的性能，可测量饮料实际样品中的核黄素含量。