EXTRACTION CONCENTRATING OF SCANDIUM (III) IN COMPLEX FORM WITH 2-HYDROXY-5-T-BUTYLPHENOL-4¢-METOXYAZOBENZENE AND ITS DETERMINATION BY ATOMIC-ABSORPTION SPECTROMETRY

A.M.Pashajanov, S.I.Niftaliyev, M.M.Agamaliyeva, S.M.Bayramov, G.G.Abbasova, Z.A.Mamedova

Complexation of scandium 2-hydroxy-5-T-butylphenol-4¢-metoxyazobenzene (HR) was studied by atomic-absorption and spectrophotometric methods. Optimum conditions of formation and extraction of the complex were found. Maximum light absorbance of a complex in n-butanol is in the range of 470÷480 nm. Molar absorption coefficient equals to (2.2–3.0)^.10⁴_. Stability constant of scandium in n-butanol is b_л=2.8·10¹⁰. Selective and sensitive techniques of extraction-atomic absorption determination of scandium in soils were developed

doi.org/10.32737/0005-2531-2021-4-49-52

Keywords : scandium, atomic-absorption method, extraction, complexation

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