Application de la goutte pendante de mercure à la détermination de minimes quantités de différents ions : communiqué préliminaire

Abstract

The application of the hanging mercury drop electrode in analysis is described. Two cases of application of the oscillo-polarographic method to reversible and irreversible processes are presented. A description is given of the method of estimating small quantities of aluminium and very small quantities (10 -5 moles/1) of lithium. Using a polarograph and a vessel of simple construction, the authors demonstrate the possibility of utilizing preliminary electrolysis with a continuous current, leading to the formation of an amalgam on the mercury drop. The method of registration of the oxydation current of this amalgam is presented. This method permits the detection of concentrations of 10 -8 moles/1 of Cu, Tl, Pb, Cd and Zn ions in a few ml of the solution analysed.