Etude analytique et dosage de micro- et submicro-traces de manganese par polarographie inverse

A method is proposed for the determination of manganese(II) by anodic stripping polarography. A systematic study was made of the various factors affecting the course of pre-electrolysis as well as the anodic stripping. A procedure is given for the determination of i ng of manganese with a precision of ± 12.7%. The selectivity of the method was studied in the presence of 14 cations ; hydrogen ions interfere at pH <5, Co²⁺ interferes at concentrations equal to that of Mn²⁺, and Mo⁷⁺ and V⁵⁺ at concentrations ?50 times that of Mn²⁺. The other ions studied do not interfere at concentrations 100–1000 times higher. An application to pharmaceutical analysis is described.