Potentiometric determination of iron with DTPA in the presence of a large amount of aluminium.
Potentiometric determination of iron with DTPA at pH 1.6 (platinum and calomel electrodes) permits determination of iron in the presence of aluminium up to an Al:Fe ratio of 70. Aluminium is determined indirectly by addition of excess of DCTA, adjustment to pH 5, and back-titration with iron(III) chloride.
Pribil
R
R
Laboratory for Analytical Chemistry, J. Heyrovsky Polarographic Institute, Czechoslovak Academy of Sciences, Prague 1, Jilská 16, Czechoslovakia.
Horácek
J
J