A rapid method for the determination of manganese in maneb and its formulations

Abstract

A method is described for the determination of manganese in fungicidal preparations containing triphenyltin and copper. A simple back-titration technique is used in which excess of EDTA is added to an aqueous suspension of the maneb, under conditions of controlled pH. The method is non-specific but, provided the technical maneb used is analysed by the same method, it gives a ready means of controlling the maneb content of commercial fungicides.