Abstract:Colorimetric reaction behavior of 1-(2-quinolylazo)-2,4,5-trihydroxybenzene (QATB) has been established with uranium(VI) under various physicochemical conditions. An addition of dilute solution of uranyl ions to the dimethylformamide (DMF) solution of QATB, resulted to form a brown colored complex which was soluble if 30% DMF concentration was maintained. The brown colored complex absorbing maximum at 560 nm in the pH range 6.5-7.5. Beer's law was valid over concentration range 0.0-14.0 ppm, with molar absorpt… Show more
“…Separation and preconcentration techniques tend to be employed just before analysis. Solvent extraction [18][19][20] and ion exchange [21,22] are popular methods because of their applicability to both preconcentration and separation.…”
“…Separation and preconcentration techniques tend to be employed just before analysis. Solvent extraction [18][19][20] and ion exchange [21,22] are popular methods because of their applicability to both preconcentration and separation.…”
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