Analytical applications of 4-(4′-methyl-2′-thiazolylazo)-2-methyl-resorcinol: Spectrophotometric determination of vanadium |
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Authors: | F García Montelongo JJ Arias F Jiménez |
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Institution: | Department of Analytical Chemistry, Faculty of Chemistry, University of Lu Laguna, Teneriffe, Spain |
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Abstract: | 4-(4′-Methyl-2′-thiazolylazo)-2-methyl-resorcinol reacts with vanadium (V) to produce a bluish-violet 1:1 complex (λmax = 560 nm, ? = 2.50 × 104M?1 · cm?1, 50% methanol-water medium), which allows the spectrophotometric determination of 0.1 to 1.4 ppm of vanadium. The method has been applied to the determination of vanadium in several low-alloy steels. |
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