ISSN 0005-2531 (Print) ISSN 2522-1841 (Online)
EXTRACTION-SPECTROPHOTOMETRIC DETERMINATION OF WOLFRAM(VI) WITH 2-HYDROXY-5-BROMTHIOPHENOL AND AMINOPHENOLS
A.Z.Zalov, M.T.İsmayılova

 

By the methods spectrophotometric methods was investigated complex formation of wolfram(VI) with  2-hydroxy-5-bromthiophenol (HBTF)  and aminophenols (AF). It was established, that mixedligand complex were  formed in weak acidic medium. It was established, that relation of components corresponds W(V):HBTF:AF-=1:2:2. Maksimum of light absorption observed at l=460–470 nm. Molar coefficient of light absorption was e=(2.4–2.6)·104. On the base of the results was offered photometric method for determination of wolfram in steel different trade-marks

Keywords : wolfram, 2-hydroxy-5-bromthiophenol, aminophenols, extraction-spectrophotometric method
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