Extraction of various-ligand complexes of zinc, cadmium and mercury with phenanthroline and some derivatives of sulfophthal n

Consideration is given to the complexing in the system zinc, cadmium and mercury ions - phanatroline - bromphenol - blue (bromcresol green); the formation of extractive complexes has been found with the Me: phenantroline - dye ratio = 1: 2 : 1. Based on the reagent extraction studies, the chemical aspects of interaction have been advanced and the extraction constants found. Methods have been developed for the extraction-photometric determination of zinc in brasses