Journal ArticleDOI
Sensitive Spectrophotometric Determination of Vanadium in Environmental Samples at PPB Levels
TLDR
In this paper, a new, sensitive and selective method for separation, and extraction - spectrophotometric determination of V (V) with pyrogallol {Ar (OH)3} and hydroxyamidines (HOA) is described.Abstract:
A new, sensitive and selective method for separation, and extraction - spectrophotometric determination of V (V) with pyrogallol {Ar (OH)3} and hydroxyamidines (HOA) is described. The molar absorptivities of the colored species with six substituted HOA lie in the range of (0.52–1.5)x 106 L mole−1 cm−1 at λmax 430–440 nm. Of these, the simplest compound, N-hydroxy-N, N- diphenylbenz-amidine (HDPBA) gives the most sensitive color reaction and hence, it is used for detailed studies. No interference of almost all diverse ions tested is noticed. The method offers the determination of vanadium in different environmental samples.read more
Citations
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Journal ArticleDOI
Spectrophotometric determination of vanadium(IV) and vanadium(V) in each other's presence. Review
M.J.C. Taylor,J.F. van Staden +1 more
Journal ArticleDOI
Speciation of vanadium in soil.
Justyna Połedniok,F. Buhl +1 more
TL;DR: The total content of vanadium in the five soil fractions was in good correlation with the totalcontent of this element in both soils found after HF-H(2)SO(4) digestion, indicating input by anthropogenic activities.
Journal ArticleDOI
Adsorptive cathodic stripping voltammetric determination of ultra-trace concentrations of vanadium on a glassy carbon mercury film electrode
S.B. Adeloju,Fleurdelis Pablo +1 more
TL;DR: In this paper, the determination of trace and ultra-trace concentrations of vanadium(V) by adsorptive cathodic stripping voltammetry on a glassy carbon mercury film electrode is described.
Journal ArticleDOI
Spectrophotometric determination of vanadium(iv) by ternary complexes of chrome azurol s with imipramine and chlorprothixene
TL;DR: In this paper, the ternary complexes formed by reacting vanadium(IV) with imipramine or chlorprothixene hydrochlorides in the presence of chrome azurol S and methylcellulose are described.
Journal ArticleDOI
An extraction-chromogenic system for vanadium(IV,V) based on 2,3-dihydroxynaphtahlene
TL;DR: In this paper, a liquid-liquid extraction-chromogenic system for vanadium(IV, V) containing 2,3-dihydroxynaphtahlene (DN), 2, 3,5-triphenyl-2H-tetrazolium chloride (TTC), water and chloroform was studied in detail.
References
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Journal ArticleDOI
Relationship between air pollution and certain chronic disease death rates. Multivariate statistical studies.
TL;DR: The relationship between air pollution and certain chronic disease death rates was investigated in this paper, where the authors found that air pollution is associated with increased mortality in certain chronic diseases, such as cancer.
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1,2,3-Phenyloxyamidine. New type of analytical reagent solvent extraction and spectrophotometric determination of vanadium(V)
Journal ArticleDOI
Colorimetric determination of vanadium(V) with 4-(2-pyridylazo)-resorcinol
O. Budevsky,L. Johnova +1 more
TL;DR: In this paper, 4-(2-Pyridylazo)-resorcinol has been found to undergo a very sensitive colour reaction with vanadium(V) in the presence of 1,2-diaminocyclohexanetetetra-acetic acid.
Journal ArticleDOI
Extraction-spectrophotometric determination of vanadium with 3,5-dinitrocatechol and Brilliant Green.
Z. Marczenko,R. Łobiński +1 more
TL;DR: A new sensitive extraction-spectrophotometric method for the determination of vanadium based on the system V(V)-DNC-Brilliant Green has been developed and has been applied to determination of traces ofVanadium in alums.