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The properties and stability of ozone in aqueous solutions of various compositions in the рН range of 0–14 were considered. The effect of anions and cations, which are involved in the redox reactions of actinides, on the stability of ozone and its reactivity has been studied. The reactions of О 3  with ions of d- and f-elements were analyzed. Depending on the solution composition and рН value, the reaction can occur directly with the O 3  molecule (direct mechanism) and/or with short-lived ion-radical products ( • OH,HO  2  •   /   O  2   −  •${\text{HO}}_{2}^{{\bullet}}/{\text{O}}_{2}^{-{\bullet}}$, H 2 O 2 /HO  2  −${\text{HO}}_{2}^{-}$,O  3   −  •${\text{O}}_{3}^{-{\bullet}}$) formed upon ozone decomposition in water (indirect mechanism). Ions with inert coordination sphere react with О 3  in the outer-sphere fashion with electron transfer. Polyvalent ions with labile coordination spheres are oxidized in acidic medium via О atom transfer, possibly, with intermediate peroxy addition (H 2 O 2 , HNO 4 , H 2 SO 5 , etc.). In alkaline medium, О 3  is converted to theO  3   −  •${\text{O}}_{3}^{-{\bullet}}$radical ion, which is the key oxidant for actinides. The results of studies and the mechanisms of reactions of ozone and its intermediates decomposition products with U, Np, Pu, and Am in various oxidation states and with some transition metals (Fe, Mn, Ag, Co, etc.) in aqueous solutions are presented and discussed.

Reactions of ozone and intermediate products of its decomposition with actinides, lanthanides and transition metals in aqueous solutions