论文部分内容阅读
制备了同时检测多巴胺(DA)和抗坏血酸(AA)的分子印迹电化学传感器。该传感器以酸性铬蓝K(ACBK)为功能单体,DA/AA为模板分子,利用电化学聚合方法在电极表面合成分子印迹聚合物膜,根据DA和AA产生的氧化电流,利用差分脉冲伏安法实现DA和AA的同时测定,且DA和AA的氧化峰电位分开近300 m V。DA和AA检测限分别达6.20×10-11mol/L和1.65×10-8mol/L。传感器可应用于人尿液中DA和AA的测定。
A molecularly imprinted electrochemical sensor for the simultaneous detection of dopamine (DA) and ascorbic acid (AA) was prepared. The sensor uses acidic chrome blue K (ACBK) as the functional monomer and DA / AA as the template molecule. Electrochemical polymerization is used to synthesize the molecularly imprinted polymer film on the electrode surface. Based on the oxidation current generated by DA and AA, the differential pulse voltammetry Anamper achieved simultaneous determination of DA and AA, and the oxidation peak potentials of DA and AA separated nearly 300 mV. The detection limits of DA and AA reached 6.20 × 10-11mol / L and 1.65 × 10-8mol / L, respectively. The sensor can be applied to the determination of DA and AA in human urine.