Spectrophotometric solvent extraction studies of 2-mercaptopyridine-1-oxide and uranyl ion complex
1Institute of Chemical Engineering, Tehran Polytechnic, Tehran, Iran; Department of Chemistry, Pahlovi University, Shiruz, Iran.
Abstract:
The complex formed by uranyl ion with 2-mercaptopyridine-1-oxide (thione) is studied by spectrophotometry. At pH 4.5 and 25 degrees the only complex formed is UO(2)(thione)(3)(-). The conditional stability constant of this complex is 2.6 x 10(12). Tributyl phosphate is used for the extraction of the complex from the aqueous phase and the extraction constant is 8.9 x 10(12). The use of the reagent for the separation and determination of uranyl ion is elaborated.
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