Abstract
The electrochemical characteristics of boron-doped polycrystalline diamond thin film (BDF) electrode 4 × 4 mm2 in size were studied using cyclic voltammetry and potentiostatic method. The diamond clectrode exhibits adequate electrochemical activity and its response current changes linearly with K3Fe(CN)6 concentrations. The response current is proportional to the square root of the scan rate, reflecting mass transport controlled by planar diffusion. Stable mass transport can be quickly established within is. The BDF electrode provides good resolving power for the determination of lead and cadmium and gives satisfactory results in the analysis of pure water sample.
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