STABILITY-CONSTANTS OF URANIUM(VI) AND THORIUM(IV) COMPLEXES FORMED WITH 8-HYDROXYQUINOLINE AND ITS 5-SULFONIC ACID-DERIVATIVE


UNAK P. , ÖZDEMİR D., UNAK T.

JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY-LETTERS, cilt.186, ss.325-332, 1994 (SCI İndekslerine Giren Dergi) identifier identifier

  • Cilt numarası: 186 Konu: 4
  • Basım Tarihi: 1994
  • Doi Numarası: 10.1007/bf02162616
  • Dergi Adı: JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY-LETTERS
  • Sayfa Sayısı: ss.325-332

Özet

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.