中文摘要：

采用电聚合方法将孔雀石绿非共价修饰到碳纳米管上，制备了新颖的聚孔雀石绿／碳纳米管修饰电极。以多巴胺和抗坏血酸为模型化合物，研究了该修饰电极的电催化作用。结果表明：电聚合法使孔雀石绿牢固地修饰到碳纳米管上，与裸电极相比，可以消除抗坏血酸的干扰，峰电流增加两倍以上，较好地提高了电极的灵敏度和分子识别性能，有利于在大量抗坏血酸存在下实现对多巴胺的选择性测定。在2×10^-3mol／L的抗坏血酸的存在下，多巴胺的差分脉冲伏安法峰电流在1×10^-7～1×10^-5mol／L范围内呈良好的线性关系，检测下限达1×10^-7mol／L。

英文摘要：

A novel modified electrode was constructed by electro polymerizing malachite green onto carbon nanotubes on the surface of a glassy carbon electrode. Taking dopamine （DA） and ascorbic acid （AA） as model compounds, the modified electrode showed a favorable ability of discrimination and sensibility. A different pulse voltammetric technique for measurement of dopamine over the range of 1 ×10^-7 -1×10^-3 mol/L has been developed. The detection limit was 1 ×10^-7 mol/L.