碳糊电极溶出伏安法测定痕量金属离子的研究

Stripping Voltammetric Determination of Trace Metal Ions at Carbon Paste Electrode

本文对碳糊电极的制备、电化学性能和易修饰性进行了研究,提出了一种新型挤压式电极,并对国内外不同材料配制的碳糊性能进行了对比。实验表明,采用碳糊电极测定金属离子具有很高的灵敏度,是一种十分实用的电极。

The preparation, electrochemical behaviour and modified properties of carbon paste elect rode are investigated. The feasibility of a new plunger carbon paste electrode with different materials is demonstrated. The detection limits of Pb, Cd, Cu, Bi and Zn in differential pulse anodic stripping voltammetry are 0.3, 0. b, 1. 2, 7 and 0. 2 ng/ml respectively. Sati sfactory accuracy is obtained for the determination of trace metal ions in running water.