Improvement of iron determination by use of ferroin-organic dye ion-association complexes.
Extraction of ion-associates of tris(1,10-phenanthroline)-iron(II) cation with monosulphonated azo dye anion into 1,2-dichloroethane is described. The method increases the sensitivity of the colorimetric determination of bivalent iron with 1,10-phenanthro-line.
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A. S. Popov's Research Institute of Radiocommunications Prague 4, Novodvorská 994, Czechoslovakia.
Musilová
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