研究了酸性、中性、碱性范围内丙酮酸在悬汞电极上的电化学行为,对实验条件进行了优化,在最佳条件下丙酮酸的还原峰电流和浓度有良好的线性关系。同时在不同pH值条件下研究了Al髥和丙酮酸的相互作用,结果表明,不同pH值范围内Al髥和丙酮酸的相互作用均为弱作用,弱作用强度为酸性>碱性>中性。这种作用强度的差别可能来自于不同条件下Al髥的存在形态不同。 The electrochemical behavior of pyruvate at the hanging mercury electrode in acidic, neutral and alkaline ranges was studied. The experimental conditions were optimized. Under the optimal conditions, the peak current and the concentration of pyruvic acid showed a good linear relationship. At the same time, the interaction between Al 髥 and pyruvate was studied under different pH conditions. The results showed that the interaction between Al 髥 and pyruvate was weak at different pH values, and the weak interaction strength was acidic> alkaline> neutral . The difference in the intensity of this action may be due to the presence of Al 髥 in different conditions.