Analytical separation of copper(II), cobalt(II) and nickel(II) using polymer bound anthranilic acid

The preferential complexing tendency of different metal ions towards chelating agents anchored on a polymer has been used for separation of transition metals. The anthranilic acid group was anchored on the polymeric cellulose back-bone by successive coupling with trifunctional reagent cyanuric chloride, in dioxane medium, at pH 7 and 9-10, respectively. This polymer bound chelating agent was used to separate Cu(II), Ni(II) and Co(II) in the concentration range 1.0-0.1 mmol/l. The separation of a mixture of two components was quantitative using column chromatography. 8 ref.--AA