Authors: M Mazloum Ardakany, Ali A Ensafi

Publication date: 2001/10/1

Journal name: International Journal of Environmental Analytical Chemistry

Volume: 81

Pages: 117-125

Publisher: Taylor & Francis Group

Abstract A differential pulse polarographic method is reported for the determination of trace
amounts of vanadium, by its catalytic effect on the oxidation of Nile blue by bromate in acidic
media. The oxidation product of Nile blue exhibits a polarographic wave at-0.17 V vs.
Ag/AgCl reference electrode. The reaction rate was monitored by measuring the differential
pulse polarographic current of the reaction product. A detection limit of 5 ng/ml and
calibration graph from 10–500 ng/ml Vanadium (V)(V (V)) were obtained. The influence of ...