Controlled potential iodometric determination of iron after extraction with di-isopropyl ether.
A selective method for the determination of small amounts of iron in different kinds of samples with complex matrices has been developed. The iron in a sample is converted into the ferric state and after extraction with di-isopropyl ether the ferric iron is iodometrically determined with a controlled-potential apparatus previously described. Iron concentrations lower than 1 ppm can be determined.
Karlsson
R
R
Department of Analytical Chemistry, Chemical Center, University of Lund, S-220 07 Lund 7, Sweden.
Gorton
L
L