Volumetric analysis and catalysis - V. Chelatometric titrations with thermometric end-point indication

Abstract

The direct titration of EDTA and DCTA as well as the determination of a number of metal ions (Zn2+, Cd2+, Cu2+, Ni2+, Mn2+, Pb2+, Hg2+, Sn2+, Al3+, In3+, Ga3+, Th4+) by backtitration with manganese(II) standard solution is described. The decomposition of hydrogen peroxide and the reaction between hydrogen peroxide and resorcinol, both catalysed by manganese, have been used as indicator systems. © 1970 Springer-Verlag.