Original scientific paper

Characterization of the Uranyl-mono-hydrogenperoxo Complex in Aqueous 0.7 mol dm-3 LiClO₄ by Spectrophotometry

R. Djogić ; Center for Marine Research Zagreb, Ruđer Bošković Institute, POB 1016, 41001 Zagreb, Croatia
B. Raspor ; Center for Marine Research Zagreb, Ruđer Bošković Institute, POB 1016, 41001 Zagreb, Croatia
M. Branica ; Center for Marine Research Zagreb, Ruđer Bošković Institute, POB 1016, 41001 Zagreb, Croatia

Abstract

UV spectra of uranyl solutions in the presence of hydrogen peroxide (in 0.7 mol dm-3 LiClC>4, at 3.0 < pH < 6.0) can be explained only by assuming the presence of uranyl-mono-hydrogenperoxo species. The apparent stability constant of this species determined spectrophotometrically amounts to K = (2.82 ± 0.68) x 1011 mol-1 dm3. By including this value into the programme for computing the distribution of uranyl species and by comparing the experimentally determined distribution to the calculated one, a good agreement was obtained.

Keywords

Hrčak ID:

137069

URI

https://hrcak.srce.hr/137069

Publication date:

1.7.1993.

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