对苯二酚(HQ)作为一种稳定剂和抗氧剂主要应用于工业领域，工业废水中对苯二酚的残留对人体及环境危害严重，因此，建立一种简单、准确检测对苯二酚的方法对食品安全和环境监测具有重要意义。本文构建了纳米氧化锌-高纯石墨/玻碳(ZnO-C/GC)复合材料电化学传感器，实验材料简单易得，成本低。利用原子力显微镜(AFM)、场发射扫描电子显微镜(SEM)、X射线衍射(XRD)和电化学交流阻抗法(EIS)分析了纳米ZnO-C复合材料的结构特征、表面特征和导电性，采用循环伏安法(CV)实现了纳米ZnO-C/GC复合材料电化学传感器对对苯二酚的检测，探究了对苯二酚的电催化机理，该电化学传感器检测对苯二酚具有良好的稳定性和准确性，较宽的线性范围，检出限达到1.0×10-8 mol/L。

Hydroquinone(HQ) was mainly used in the industrial field as a stabilizing agent and antioxygen. The residue of hydroquinone in industrial wastewater was seriously harmful to human body and environment. Therefore, it is of great significance to establish a simple and accurate method for the detection of hydroquinone for food safety and environmental monitoring. In this paper, a nano-zinc oxide-high purity graphite/glass carbon (ZnO-C/GC) composite electrochemical sensor was prepared. The experimental materials were simple and low cost. The structural characteristics, surface characteristics and conductivity of nano-ZnO-C composites material were analyzed by atomic force microscope (AFM), field emission scanning electron microscope (SEM), X-ray diffraction (XRD) and electrochemical AC impedance (EIS). Hydroquinone by cyclic voltammetry (CV) was used to realize the detection of hydroquinone by nano-ZnO-C/GC composite electrochemical sensor. The electrocatalytic mechanism of hydroquinone was explored. The electrochemical sensor has good stability and accuracy for the detection of hydroquinone, a wide linear range, and a detection limit of 1.0 × 10-8 mol/L.