SYNTHESIS AND ANALYTICAL APPLICATIONS OF HYDROXAMIC ACIDS FOR DETERMINATION OF VANADIUM(V)

A number of monohydroxamic acids like salicyl, cinnamo, m-nitro benzo, tartaric and benzohydroxamic acids as well as dihydroxamic acids were synthesized and characterized using spectroscopic techniques with the aim to develop selective chelating agents for determination of transi tion metals. Optimum conditions for maximum complexation and wavelengt h for spectrophotometric determination were investigated. lambda(max) of 308 +/- 2 was observed with all ligands investigated, while pH-2 an d 11 were found optimum pHs for maximum complexation. Interferences ef fect of selected cations on determination of vanadium(V) and its detec tion limits were also investigated.