Extractions with long-chain amines-III: colorimetric determination of molybdenum as thioglycollate |
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| Authors: | Pribil R Adam J |
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| Institution: | Analytical Laboratory, Heyrovsky Polarographic Institute, Czechoslovak Academy of Sciences, Prague 1, Jilská 16, Czechoslovakia. |
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| Abstract: | A highly selective and sensitive colorimetric determination of molybdenum(VI) based on its extraction with a chloroform solution of trioctylamine from solutions of acetic and thioglycollic acid (TGA) is described. The yellow chloroform extract containing the molybdenum-TGA complex is measured at 370 nm. With a single extraction it is possible to determine small amounts of molybdenum in the presence of very large concentrations of almost all metals. Only bismuth, mercury and tungsten interfere. |
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