Stability constants of uranium(VI) and thorium(IV) complexes formed with 8-hydroxyquinoline and its 5-sulfonic acid derivative |
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Authors: | P Ünak D Özdemir T Ünak |
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Institution: | (1) Ege University, Institute of Nuclear Sciences, 35100 Bornova, Izmir, Turkey;(2) Faculty of Science, Department of Chemistry, Ege University, 35100 Bornova, Izmir, Turkey |
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Abstract: | In this study, the stability constants of uranium(VI) and thorium(IV) complexes formed with 8-hydroxyquinoline (8-HOQ) and its 5-sulfonic acid (8-HOQ-5-SO3H) derivative have been determined using the Irving-Rossotti method, computing the Calvin-Bjerrum pH-titration data. As a result, it is determined that the thorium(IV) complexes are considerably more stable than the corresponding uranium(VI) complexes. On the other hand, the complexes formed between 8-HOQ-5-SO3H and uranium(VI) or thorium(IV) are less stable than the corresponding 8-HOQ complexes. |
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