EXTRACTION MECHANISM THE COMPOSITION OF THE EXTRACTED IRON (III) CHLORIDE COMPLEX WAS DETERMINED BY THE EQUILIBRIUM SHIFT METHOD [7]. THE CONCENTRATION OF IRON (III) IN THE EXTRACT WAS DETERMINED BY THE PHOTOMETRIC METHOD. THE DATA OBTAINED (FIG. 1) SHOW THAT IN LOGARITHMIC COORDINATES

The developed method for the extraction-photometric determination of iron with PAAF, which differs from existing ones in selectivity, sensitivity, simplicity and rapidity, is recommended for the analysis of industrial solutions, wastewater, ores, rocks, concentrates and other materials with a complex chemical composition without separating associated elements