Vk. Reddy et al., Simultaneous spectrophotometric determination of copper(II), vanadium(V), and iron(III) using 2-hydroxy-1-naphthaldehyde benzoylhydrazone, J ANALYT CH, 55(5), 2000, pp. 435-439
A simple and new simultaneous spectrophotometric method is proposed for the
analysis of a three-component system containing Cu(II), V(V) and Fe(III) w
ithout separation using 2-hydroxy-1-naphthaldehyde benzoylhydrazone (OHNABH
). The reagent reacts with all the three metal ions at pH 5, forming solubl
e colored species in 30% DME The physico-chemical characteristics, statisti
cal analysis and application of the method For the analysis of complex mate
rials are reported. The effect of diverse ions and the stoichiometry and st
ability constants are also studied.