Croatica Chemica Acta, Vol. 52 No. 3, 1979.
Original scientific paper
N-Hydroxy-N-p-chlorophenyl-N' -(3-chloro-4-methyl)phenyl- p-toluamidine as a New Sensitive and Selective Chromogenic Reagent for Extractive Photometric Determination of Vanadium(V) in Presence of Phenol, p-Chlorophenol or 2-Naphthol
R. S. Kharsan
; Chemistry Department, Ravishankar University of Raipur, Raipur 492 002 India
R. K. Mishra
; Chemistry Department, Ravishankar University of Raipur, Raipur 492 002 India
Abstract
A new method for the extraction and spectrophotometric
determination of vanadium(V) using N-hydroxy-N-p-chlorophenyl-
N'-(3-chloro-4-methyl)phenyl-p-toluamidine(HCPCMPTA) in the
presence of phenols is proposed. The complexes, which can be
quantitatively extracted into chloroform, show J. max at 595-625
nm having a molar absorptivity in the range 6000-7600 1 mole-1
cm-1• Many ions commonly associated with vanadium(V) such as
Fe3+, Cu2+, Ti4+, Zr4+, W6+, Mo6+, Mn2+, Nb5+ and Ta5+ do not interfere.
The method has been applied for the determination of vanadium
in standard steel samples.
Keywords
Hrčak ID:
195892
URI
Publication date:
20.11.1979.
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