Voltametric analysis cell - with holder cavity holding oversize mercury droplet

摘要

Voltametric analysis is carried out using a measuring cell consisting of a sample vessel contg. a reference electrode and an indicator electrode, the indicator electrode comprising a mercury droplet in a basin-like holder connected to a contact lead. The novelty is that the holder cavity is filled with mercury to about one-third to one-half of the droplet dia. and then current-voltage curves for the soln. in the sample vessel are recorded. Also claimed is measuring cell for carrying out the process. USE/ADVANTAGE - The process is used for qualitative and quantitative analysis of reducable substances in soln. by polarography, `stripping voltametry' or adsorption voltametry, e.g. for heavy metal detection in the ppm. to ppb. range. The mercury droplet can be easily located in its correct position and remains stable and resistant to gas inclusions.