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以四溴双酚S为模板分子、吡咯为单体,采用电聚合方法在石墨烯修饰碳电极表面制备四溴双酚S印迹电化学传感器。采用扫描电子显微技术、循环伏安法以及差分脉冲伏安法对该印迹传感器的形貌和电化学性能进行表征。结果表明,该印迹电化学传感器对四溴双酚S具有很好的选择识别性能;在1.0×10-8~5.0×10-5mol/L浓度范围内,传感器的响应峰电流与四溴双酚S浓度的负对数呈良好的线性关系(R2=0.99),最低检测限为3.3×10-9mol/L(S/N=3)。该印迹电化学传感器成功用于雨水、自来水和矿泉水等实际样品中四溴双酚S浓度的检测。
Tetrabromobisphenol S as a template molecule and pyrrole as monomers, tetrabromobisphenol S blotting electrochemical sensor was prepared on the surface of graphene modified carbon electrode by electropolymerization. The morphology and electrochemical performance of the imprinted sensor were characterized by scanning electron microscopy, cyclic voltammetry and differential pulse voltammetry. The results show that the imprinted electrochemical sensor has a good selectivity for tetrabromobisphenol S. In the concentration range of 1.0 × 10-8 ~ 5.0 × 10-5mol / L, the response peak current of the sensor and tetrabromobisphenol The negative logarithm of S concentration showed a good linear relationship (R2 = 0.99) with the lowest detection limit of 3.3 × 10-9 mol / L (S / N = 3). The imprinted electrochemical sensor has been successfully used for the detection of tetrabromobisphenol-S concentration in real samples such as rain water, tap water and mineral water.