Collect. Czech. Chem. Commun. 1980, 45, 3320-3331

Spectrophotometric study of the interaction of ferric ions with Chromazurol S in the presence of cetylpyridinium bromide

Vlastimil Kubáňa, Dagmar Gotzmannováb and Siegfried Kochc

a Department of Analytical Chemistry, Purkyně University, 611 37 Brno, Czechoslovakia
b Department of Clinical Biochemistry, District Hospital and Health Centre, 703 00 Ostrava-Zabreh, Czechoslovakia
c Department of Analytical Chemistry, Chemical Section, Bergakademie, 92 Freiberg, G.D.R.


The properties of the Fe(III)-Chromazurol S-cetylpyridinium bromide system were found by graphical and numerical interpretation of the absorbance curves using a desk-top calculator controlled SuperscanTM3 spectrophotometer and programs for the direct recording and treatment of experimental data. The composition and probable structure of the ternary species FeL.2 T and Fe(LH)2.n T under various experimental conditions and the probable reaction mechanism of its formation are discussed.