文章介绍了电化学聚合1.10-菲络啉合钴(II)化学修饰电极的制备,并对NO的响应范围及机理作了初步的研究.实验发现,用电化学方法聚合制备的该电极涂加Nafion后对NO的检测有高的灵敏度和好的选择性.NO的浓度在4.2×10-5~2.4×10-7 mol/L范围内氧化电流与浓度呈线性关系,其线性相关系数为0.996,检测限达4.8×10-8mol/L; In this paper, the preparation of electrochemically-polymerized 1.10-phenanthroline cobalt (II) modified electrode was introduced and the reaction range and mechanism of NO were preliminarily studied. It was found that the electrode prepared by electrochemical polymerization was coated with Nafion has high sensitivity and good selectivity for the detection of NO.The linear relationship between the oxidation current and the concentration of NO in the range of 4.2 × 10-5 ~ 2.4 × 10-7 mol / L with a linear correlation coefficient of 0.996 , Detection limit of 4.8 × 10-8mol / L;