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EXPRESS TEST METHOD FOR THE DETERMINATION OF CHROMIUM (VI) IONS WITH TWO SODIUM SALTS OF IMMOBILIZED 1,8-DIOXYNAPHTHALENINE-3,6-DISULPHIC ACID

1,8-dioxinaphthalene-3,6-disulfonic acid disodium salt; analytical reagent; chromium(VI) ion; polyethylenepolyaminepolyacrylonitrile, immobi-lization, absorption spectrophotometry, reflection coefficient, scanning electron microscope.

Authors

The analytical properties of the immobilized disodium salt of 1,8-dioxinaphthalene-3,6-disulfonic acid (DNDA) in a matrix of
polyethylene-polyaminepolyacrylonitrile (PPA) were studied in the study of the Cr(VI) ion by sorption-spectrophotometric
methods, determined by titration, spectroscopic analysis and scanning electron microscopy.