Spectrophotometric determination of micro amounts of vanadium (V) with resacietophenotte-T-indirect method

Abstract

A-method has been developed for the indirect spectrophotometeic determination of vanadium(V) using rbsacetophenone as reagent. It involves the oxidation of iron(II) to (III) by ,Yanadium(V) anii the resulting ferric iron gives wine-red coloured complex with resacetophenone." The complex was stable for 20 hrs; The absorbance of the complex measured at-365 nm obeys Bcer's law over the concentration range 2-8 jug/ml of vanadium. The molar absorptivity and Sandell sensitivity ire (2.25 ± 0.05) X10 lit. mole-1 cm-1 and 0*0226/ig|cm* respectively.The effect of various ions was studied.