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Highly sensitive spectrophotometric kinetic determination of vanadium by catalytic effect on the gallocyanine-bromate reaction
Authors: Ali A Ensafi, A Kazemzadeh
Publication date: 1994/11/20
Journal name: Analytica chimica acta
Volume: 298
Pages: 27-32
Publisher: Elsevier
Abstract A simple kinetic spectrophotometric method was developed for the determination of
traces of vanadium present in petroleum, food and steel. The method is based on the
catalytic effect of vanadium on the oxidation of gallocyanine by bromate at a pH of 4.0. The
decrease in absorbance of gallocyanine at 620 run at a fixed time of 4.5 min from initiation of
the reaction is proportional to the concentration of V (V) for the range of 0.010–500 ng· ml−
1. The limit of detection is 0.0005 ng· ml− 1. The relative standard deviation for ten ...
traces of vanadium present in petroleum, food and steel. The method is based on the
catalytic effect of vanadium on the oxidation of gallocyanine by bromate at a pH of 4.0. The
decrease in absorbance of gallocyanine at 620 run at a fixed time of 4.5 min from initiation of
the reaction is proportional to the concentration of V (V) for the range of 0.010–500 ng· ml−
1. The limit of detection is 0.0005 ng· ml− 1. The relative standard deviation for ten ...
Journal Papers
Month/Season:
November
Year:
1994