Spectrophotometric determination of molybdenum in steel after extraction with thiocyanate and butyltriphenylphosphonium bromide into microcrystalline benzophenone |
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| Authors: | D.Thorburn Burns N. Tungkananuruk |
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| Affiliation: | Department of Analytical Chemistry, The Queen''s University of Belfast, Belfast BT9 5AG Great Britain;Chemistry Department, Faculty of Science, Kasetsart University, P. O. Box 1011, Kasetsart, Bangkok 10903 Thailand |
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| Abstract: | Molybdenum(VI) is reduced to molybdenum (V) with ascorbic acid, reacts with thiocyanate and the complex is extracted with butyltriphenylphosphonium by microcrystalline benzophenone and the solid phase is dissolved in chloroform and measured spectrophotometrically. The system is applied to the determination of molybdenum (0.53–4.92%) in high-speed tool steels without prior separation of iron. |
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