Squarete complexes of uranyl ions in aqueous solution |
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| Authors: | S. A. Sayed A. T. Kandil G. R. Choppin |
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| Affiliation: | (1) Department of Chemistry, Faculty of Science, Helwan University, Helwan, Cairo, Egypt;(2) Department of Chemistry, Florida State University, 32306 Tallahassee, FL, USA |
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| Abstract: | The stability constants of UO22+-squarate complexes are measured at ionic strengths of 0.05M, 0.06M, 0.075M, 0.09M, 0.1M (squaric acid-perchloric acid) using a solvent extraction method at a pH of 1.1 and a temperature of 25 °C. The extractant used is dinonylnaphthalenesulfonic acid in n-heptane. The aqueous phase was made of a mixture of squaric and perchloric acid and233U radio tracer. The stability constants of squarate complexes of UO22+ is seen to decrease linearly with the square root of the ionic strength. |
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