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运用循环伏安法在光谱纯石墨电极上制备了亚甲紫聚合膜修饰电极．在酸性、中性和碱性溶液中，亚甲紫单体均能在电极上进行电化学聚合得到性能稳定的亚甲紫聚合膜．研究了实验条件对膜生长过程的影响和亚甲紫聚合膜修饰电极的电化学行为，并讨论了该修饰电极对亚硝酸根的电催化还原作用．结果表明：亚硝酸根在亚甲紫聚合膜修饰电极上具有很好的电流响应，催化峰电流与亚硝酸根的浓度在1．0×10－5～3．0×10－3mol／L范围内呈良好的线性关系．
Cyclic voltammetry was used to prepare polymethylmethacrylate modified electrode on a spectroscopic pure graphite electrode. In acidic, neutral and alkaline solutions, the monomer of methylene blue can all be electrochemically polymerized on the electrode to obtain stable polymethylmethacrylate film. The influence of experimental conditions on the growth of the membrane and the electrochemical behavior of the modified electrode were studied. The electrocatalytic reduction of nitrite by the modified electrode was also discussed. The results show that nitrite has a good current response at the modified electrode of polymethylmethacrylate, the peak current and the concentration of nitrite in the range of 1.0 × 10-5 ~ 3.0 × 10-3mol / L Within a good linear relationship.