聚吡咯水杨酸修饰电极的电化学行为及水杨酸含量测定

Electrochemical Behaviour of Polypyrrol-Salicylic Acid Modified Electrode and Determination of Salicylic Acid

本文用电化学方法制备了聚吡咯-水杨酸修饰电极;并进行了电化学行为的研究,经电化学处理该电极对水杨酸根具有选择性响应,响应线性范围在1.0×10^(-5)～1.0×10^(-3)mol/L之间.电极斜率为40mV/pC,该电极具有较好的稳定性,响应时间在180～300s之间;电极寿命可达60d.

Polypyrrole-salicylic acid modified electrode was prepared by electrochemical method. The electrode has selective response for salicylic acid group after electrochemical deposition. It shows a linear range of 1. 0×10-5-1.0×10-3 mol/L for salicylic acid and electrode slope of 40 mV/pC. The lifetime of the electrode was 60 d, and the response time was 180-300 s.