Synthesis of polyvinyl alcohol condensed 2,4-dihydroxy-5-antipyrinylazo phenylaldehyde and liquid-solid extraction of cadmium(II), copper(II), cobalt(II) and nickel(II)
1115-1118A polymeric chromogenic reagent, polyvinyl alcohol condensed 2,4-dihydroxy-5-antipyrinylazo phenylaldehyde (PV•DHAPA), has been synthesized for the first time by condensing 2,4-dihydroxy-5-antipyrinylazophenylaldehyde with polyvinyl alcohol. PV•DHAPA has been used to study the liquid-solid extraction behaviour of the complexes of cadmium(Il), copper(Il), cobalt(Il) and nickel(II) in water soluble polymer Tween 80- inorganic salt-water system under different experimental conditions
