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Spectrophotometric reaction rate method for the determination of trace amounts of vanadium (V) by its catalytic effect on the oxidation of nile blue with bromate
Authors: Ali A Ensafi, MK Amini, M Mazloum
Publication date: 1999/1/1
Volume: 32
Pages: 1927-1937
Publisher: Taylor & Francis Group
ABTRACT A kinetic spectrophotometric method for the determination of trace amounts of
vanadium (V) is described. It is based on the catalytic action of this ion on the oxidation of
Nile Blue by bromate, which yields a colorless product in acidic media. The reaction is
followed spectrophotometrically by measuring the rate of decrease in absorbance at 585 nm
and 30° C. A fixed time method of 4.0 min from initiation of the reaction was used. Vanadium
(V) in the range of 0.004-0.520 μg/ml can be determined. The proposed method is hardly ...
vanadium (V) is described. It is based on the catalytic action of this ion on the oxidation of
Nile Blue by bromate, which yields a colorless product in acidic media. The reaction is
followed spectrophotometrically by measuring the rate of decrease in absorbance at 585 nm
and 30° C. A fixed time method of 4.0 min from initiation of the reaction was used. Vanadium
(V) in the range of 0.004-0.520 μg/ml can be determined. The proposed method is hardly ...
Authors
Ali A Ensafi, MK Amini, M Mazloum
Publication date
1999/1/1
Volume
32
Issue
9
Pages
1927-1937
Publisher
Taylor & Francis Group
Description
ABTRACT A kinetic spectrophotometric method for the determination of trace amounts of
vanadium (V) is described. It is based on the catalytic action of this ion on the oxidation of
Nile Blue by bromate, which yields a colorless product in acidic media. The reaction is
followed spectrophotometrically by measuring the rate of decrease in absorbance at 585 nm
and 30° C. A fixed time method of 4.0 min from initiation of the reaction was used. Vanadium
(V) in the range of 0.004-0.520 μg/ml can be determined. The proposed method is hardly ...
vanadium (V) is described. It is based on the catalytic action of this ion on the oxidation of
Nile Blue by bromate, which yields a colorless product in acidic media. The reaction is
followed spectrophotometrically by measuring the rate of decrease in absorbance at 585 nm
and 30° C. A fixed time method of 4.0 min from initiation of the reaction was used. Vanadium
(V) in the range of 0.004-0.520 μg/ml can be determined. The proposed method is hardly ...
Journal Papers
Month/Season:
January
Year:
1999