Spectrophotometric Determination of Vanadium (V) Using N–Methyl Cinnamo Hydroxamic Acid as Reagent

Abstract

The subject of this research is to study the possibility of novel, rapid highly sensitive and selective spectrphotometric method was proposed for the determination of vanadium (V) using N- methyl cinnamo hydroxamic acid (N-MCHA) as a reagent. The method was based on the formation of purple coloured complex between N–methyl cinnamo hydroxamic acid and vanadium (V). The optimum conditions for the determination were established. The Beer’s law is obeyed for vanadium (V) in the concentration range to 0.2-10.0µg/ml at the maximum absorbance at 480nm. In this method molar absorptivity, Sand ell’s sensitivity, detection limit and quantization limit were reported. The proposed method free from over a wide variety of cations, anions, and complexion interference species. This method was successfully applied to the analysis of vanadium (V) in water, soil, urine, steel and pharmaceutical samples.

Keywords: Vanadium (V), N-methyl cinnamo hydroxamic acid, Absorptivity, Complexion.