A method [or the determination of trace levels of vanadium(V) using differential pulse polarography (DPP) is described. The method is based on the catalytic current of vanadium(V) obtained in the presence of sodium bromate. Experimental conditions such as pH and the composition of supporting electrolyte were optimized to get a linear calibration graph. The effect of several cations and anions on the catalytic current was investigated. The relative standard deviation (from 6 replications) at 0.50 Fg/ml vanadium(V) was 2.5%
