international journal of advanced research in chemistry and chemical engineering
P. K. Rana,R. S. Lokhande,S. M. Pitale,S. P. Janwadkar,P.S.Navarkar,D.K.Yadav
Published in International Journal of Advanced Research in Chemistry and Chemical Engineering
ISSN: xxxx-xxx Impact Factor:xx Volume:1 Issue:1 Year: 03 April,2015 Pages:24-29
Abstract
Acetophenone 2’,4’-Dihydroxy thiosemicarbazone (APD HTS) is used as a reagent for the extractive spectrophotometric determination of Uranium. The reagent APDHTS gave instantaneous and stable Orange colour with Uranium at pH 7.4. The color reaction in detail has been explored and the possibility of photometric determination of the micro amounts of Uranium is established with necessary conditions. A linear calibration graph over the concentration range 1 ppm to 12 ppm with a 3σ limit of detection of 0.486 ppm was obtained by applying the spectrophotometric method at wavelength 370 nm. The stoichiometry of the complex is established as 1:2 (M: L) by Job’s method of continuous variation and confirmed by mole ratio method. The standard deviation and the coefficient of variations are presented. The molar absorptivity and Sandell’s sensitivity of the complex is 0.9881 x 104 L mol-1cm –1 and 0.04819 μg cm -2 respectively. The results of the prescribed procedure applied for the determination of the micro amounts of U (VI) in various synthetic and standard steel samples are presented.
Kewords
Extractive Spectrophotometric Determination, acetophenone 2’,4’-dihydroxy thiosemicarbazone (APDHTS), Uranium, Beer’s Law, Molar Absorptivity, S
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