In this work, graphene oxide/β‐cyclodextrin (GO/β‐CD) composite was synthesised and applied to construct a highly sensitive electrochemical sensor for the determination of propyl gallate (PG) and butyl hydroxy anisole (BHA) in edible oil, simultaneously. Various methods were used to characterize the properties of GO/β‐cyclodextrin composite. Furthermore, the oxidation peak currents of PG and BHA were increased obviously at the modified glassy carbon electrode, which improved the sensitivity of proposed method. Under optimal conditions, the peak currents of PG and BHA increased linearly with its concentration in the range of 0.1–30.0 μmol/L and 0.05–30 μmol/L, respectively. The limit of detections were as low as 0.01 μmol/L and 0.03 μmol/L, respectively. Finally, the sensor was successfully applied to edible oil sample analysis. The recoveries varied from 95.3 % to 108.6 % with the RSDs 2.9 %–4.9 %, indicated that the proposed sensor can be used for the simultaneous determination of PG and BHA in edible oil.

中文翻译：

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氧化石墨烯/β-环糊精修饰的电化学传感器同时测定食用油中的抗氧化剂

在这项工作中，合成了氧化石墨烯/β-环糊精（GO /β-CD）复​​合物，并用于构建高灵敏的电化学传感器，用于同时测定食用油中的没食子酸丙酯（PG）和丁基羟基茴香醚（BHA）。 。使用多种方法表征GO /β-环糊精复合材料的性能。此外，在修饰的玻碳电极上，PG和BHA的氧化峰值电流明显增加，从而提高了所提方法的灵敏度。在最佳条件下，PG和BHA的峰值电流随其浓度分别在0.1–30.0μmol/ L和0.05–30μmol/ L的范围内线性增加。检出限分别低至0.01μmol/ L和0.03μmol/ L。最终，该传感器成功应用于食用油样品分析。