Determination of iron, barium and bismuth in barium-ferrite

Abstract

Iron, barium and bismuth in barium-ferrites were determined by the following procedure. Iron was determined by potassium-dichromate method. Barium was titrated with EDTA using EBT as an indicator after iron was masked with potassium cyanide. Bismuth was titrated with EDTA using XO as an indicator after iron was masked with either ascorbic acid or sodium pyrophosphate. By this method the determination of iron, barium and bismuth is made in 60 minutes and it's absolute error was within ±0.1%.