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Abstract：
In this work, an imprinted electrochemical sensor based on electrochemical reduced graphene covalently modified carbon electrode was developed for the determination of 4-nonylphenol (NP). An amine-terminated functional graphene oxide was covalently modified onto the electrode surface with diazonium salt reactions to improve the stability and reproducibility of the imprinted sensor. The electrochemical properties of each modified electrodes were investigated with differential pulse voltammetry (DPV). The electrochemical characteristic of the imprinted sensor was also investigated using electrochemical impedance spectroscopy (EIS) in detail. The response currents of the imprinted electrode exhibited a linear relationship toward 4-nonylphenol concentration ranging from 1.0 × 10(-11) to 1.0 × 10(-8) gm L(-1) with the detection limit of 3.5 × 10(-12) gm L(-1) (S/N=3). The fabricated electrochemical imprinted sensor was successfully applied to the detection of 4-nonylphenol in rain and lake water samples.
摘要：
在这项工作中,建立了基于电化学还原石墨烯共价修饰碳电极的印迹电化学传感器，用于测定4-壬基酚（NP）。通过重氮盐反应将胺封端的功能氧化石墨烯共价修饰到电极表面上，以提高印迹传感器的稳定性和再现性。用差分脉冲伏安法（DPV）研究了每种修饰电极的电化学性能。还使用电化学阻抗谱（EIS）详细研究了压印传感器的电化学特性。压印电极的响应电流与4-壬基酚浓度呈线性关系，范围为1.0×10（-11）至1.0×10（-8）gmL（-1），检测极限为3.5×10（-12）gmL（-1）（S/N=3）。所制备的电化学印迹传感器已成功应用于雨水和湖水样品中4-壬基酚的检测。
