采用循环伏安法制备了预阳极化碳糊电极,研究了对乙酰氨基酚和多巴胺在该修饰电极上的电化学行为。结果表明,预阳极化碳糊电极对对乙酰氨基酚和多巴胺的电化学行为具有良好的电催化作用。对乙酰氨基酚和多巴胺的氧化峰电流与其浓度在2.0×10-6～5.0×10-4mol/L的范围内呈良好的线性关系,检出限分别为6.3×10-7mol/L,2.5×10-7mol/L。方法已用于药物样品中对乙酰氨基酚和多巴胺的测定。 Pre-anodized carbon paste electrodes were prepared by cyclic voltammetry. The electrochemical behavior of acetaminophen and dopamine at the modified electrode was studied. The results show that the pre-anodized carbon paste electrode has good electrocatalysis on the electrochemical behavior of acetaminophen and dopamine. The peak current of oxidation of acetaminophen and dopamine showed a good linearity with the concentration range of 2.0 × 10-6 ~ 5.0 × 10-4mol / L with the detection limits of 6.3 × 10-7mol / L, 2.5 × 10-7mol / L. The method has been used for the determination of acetaminophen and dopamine in pharmaceutical samples.