Preparation and Properties of Mercury Films on Solid Amalgam Surface

Abstract

There have been suggested a simple electrolyzer and a reliable procedure for preparation of mercury films with precisely defined thickness on a conducting surface. A small volume of electrolyte which can be used more times and a paste amalgam which cannot spill substantially decrease a risk of environment contamination. Measurements were parallelly performed on a liquid mercury free silver solid amalgam electrode (AgSAE), on a mercury meniscus modified AgSAE and on HMDE for comparing their properties with those of the mercury film electrodes (MF-AgSAE). A current response of the film electrodes is the biggest. The peak width, which determines the method resolution, is smallest on the film electrodes. Range of working potentials on MF-AgSAE is comparable with one on HMDE in different supporting electrolytes