“…Furthermore, their stability in solution increases when they are multiphase (organic + inorganic)) (Alewell et al, 2017;Kersting, 2013;Romanenko and Lujanienė, 2023;Xu et al, 2017). Finally, Romanenko and Lujanienė, (2023) showed that Pu(IV) reacts actively with colloids and suspended solids while Pu(V) reacts with carbonate particles. In the case of this study, it is probably Pu(IV) since it is associated with fine particles (clays, silts, organic matter).…”