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- W2068389976 abstract "Determination of vanadium at low concentrations is easily performed with pyrogallol as a ligand which forms a bluish-violet complex with vanadium(III), (IV) or (V). The colour of the bluish-violet complex (λmax = 580 nm) contrasts well with the colour of both pyrogallol and vanadium. The complexes are stable for several hours. Beer's law is obeyed over the range 0–14 μg/ml vanadium at pH 6. The apparent molar absorptivity at 580 nm is (7.75 ± 0.25) × 1031.mole−1.cm−1. The effects of diverse ions on the determination of vanadium have been fully studied. Only Mo(VI) and W(VI) interfere seriously. The method is selective, sensitive and can be applied to the determination of total vanadium in a variety of samples." @default.
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- W2068389976 date "1992-03-01" @default.
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- W2068389976 title "Spectrophotometric determination of vanadium in different oxidation states with pyrogallol" @default.
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- W2068389976 doi "https://doi.org/10.1016/0039-9140(92)80033-a" @default.
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