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制备了Fe(CN)63-/4-/多壁碳纳米管/壳聚糖修饰的玻碳电极。用循环伏安法、扫描隧道电子显微镜对修饰电极加以表征。基于该修饰电极对多巴胺氧化有明显的催化作用,构建了一种多巴胺电化学传感器。用计时电流法检测多巴胺在5.0×10-7～1.6×10-4mol/L浓度范围内与计时电流响应呈现良好的线性关系,检出限为1.5×10-7mol/L(S/N=3)。修饰电极可用于多巴胺实际样品的检测。
Prepared Fe (CN) 63- / 4- / multi-walled carbon nanotube / chitosan modified glassy carbon electrode. Cyclic voltammetry and scanning electron microscopy were used to characterize the modified electrode. Based on the catalytic effect of the modified electrode on dopamine oxidation, a dopamine electrochemical sensor was constructed. The chronoamperometry showed a good linear relationship between chronoamperometry and dopamine concentration in the range of 5.0 × 10-7 ~ 1.6 × 10-4mol / L with a detection limit of 1.5 × 10-7mol / L (S / N = 3 ). Modified electrode can be used for the actual detection of dopamine samples.