基于氧化锌@金纳米复合材料/玻碳电极电化学传感器检测双酚A  

Detection of bisphenol A based on zinc oxide@gold nanocomposites/glassy carbon electrode electrochemical sensor

作　　者：崔虹[1] 陈星 刘宝林[2] CUI Hong;CHEN Xing;LIU Bao-Lin(College of Environmental Engineering,Yellow River Conservancy Technical Institute,Kaifeng 475004,China;College of Chemistry and Chemical Engineering,Henan University,Kaifeng 475004,China)

机构地区：[1]黄河水利职业技术学院环境工程学院,开封475004 [2]河南大学化学化工学院,开封475004

出　　处：《食品安全质量检测学报》2022年第10期3237-3242,共6页Journal of Food Safety and Quality

基　　金：河南省高等学校重点科研项目计划(21A170015)。

摘　　要：目的 制备氧化锌@金纳米复合材料/玻碳电极(zinc oxide@gold nanocomposites/glassy carbon electrode, ZnO@Au/GCE)电化学传感器对双酚A进行检测分析。方法 合成了氧化锌纳米花(zinc oxide nano flower,ZnO)并在ZnO上面生长纳米金(gold nanocomposites,Au)制备了新型的ZnO@Au纳米复合材料。以ZnO@Au为修饰材料,采用玻碳电极(glassy carbon electrode, GCE)构建了ZnO@Au/GCE传感器。通过对缓冲液、ZnO@Au修饰量的优化,确定ZnO@Au/GCE的最佳工作条件,对双酚A进行检测分析。结果 ZnO@Au不仅导电性、稳定性好而且具有良好的催化性,可有效提高ZnO@Au/GCE的灵敏度。双酚A浓度与氧化峰电流分别在0.05~1.00μmol/L和1.0~240.0μmol/L范围内呈线性关系,检出限(S/N=3)为0.021μmol/L,加标检测结果与高效液相色谱法一致,且该传感器重复性、稳定性较好,对常见干扰物有良好的抗干扰能力。结论ZnO@Au/GCE操作简便、快捷且准确度高,可用于双酚A的快速定量分析。Objective To prepare zinc oxide@gold nanocomposites/glassy carbon electrode(ZnO@Au/GCE)electrochemical sensor for the detection and analysis of bisphenol A. Methods Zinc oxide nano flower(ZnO) was synthesized and gold nanocomposites(Au) were grown on ZnO to prepare a new type of ZnO@Au nanocomposites.ZnO@Au/GCE sensor was constructed using ZnO@Au and glassy carbon electrode(GCE). Optimum working conditions were determined by optimizing the buffer and ZnO@Au for the detection and analysis of bisphenol A.Results Zn O@Au not only had good conductivity and stability, but also had good catalysis, which could effectively improve the sensitivity of ZnO@Au/GCE. The sensor exhibited linear relationships between bisphenol A concentration and oxidation peak current from 0.05 to 1.00 μmol/L and from 1.0 to 240.0 μmol/L, the limit of detection was 0.021 μmol/L(S/N=3), the results of spiked detection were consistent with those of high performance liquid chromatography and the sensor had good repeatabilities, stabilities, and had good anti-interference abilities to common interferents. Conclusion ZnO@Au/GCE is simple, rapid, accurate, and can be used for rapid quantitative analysis of bisphenol A.

关 键 词：双酚A 电化学传感器 氧化锌纳米材料 金纳米粒子 

分 类 号：O657.1[理学—分析化学] TQ320.7[理学—化学]