Abstract
4-(21-Thiazolylazo) resacetophenone oxime forms a pink colored soluble complex with uranium(VI) in buffer solutions of pH 6.0. The colored complex has a maximum absorbance at the wavelength 572 nm and the color is stable for about 48 h. The system obeys Beer's law over the concentration range 0.2–6.0 μg of uranium cm−3. The molar absorptivity and the Sandell sensitivity of the complex are 6.2×104 dm3.mol−1.cm−1 and 0.0038 μg cm−2, respectively. Effect of various diversions has been studied and the method was successfully applied for the determination of uranium in rock samples.
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