Application of a controlled-growth mercury drop electrode to polarography

Abstract

In the proposed device for producing the controlled-growth mercury drop electrode (CGMDE), the mercury outflow is controlled by a fast response valve. Because of this the drop growth mode, rate and size can be modified by the pulse sequence and programmed in advance. The CGMDE retains many features of the DME and SMDE and also has other unique capabilities which are interesting from the point of view of polarography, voltammetry and automatic analysis; recalibration of the drop size may be achieved automatically. The results presented in this paper provide an illustration of these features, particularly those which are of interest in polarography.