Investigation of a new “N₂S₂O₂” chelating agent with high Po(iv) affinity

Abstract

A water-soluble "NSO" complexing agent was designed for polonium(iv) decorporation. The bifunctional ligand showed outstanding Po(iv) complexing abilities, with a conditional stability constant three orders of magnitude higher than the reference ligand BAL.

UV–Vis Absorption Spectroscopy of Polonium(IV) Chloride Complexes: An Electronic Structure Theory Study

“…The situation is much less clear regarding the chemical behavior of polonium species in solution. Notably, the complexation of the polonium­(IV) ion with four distinct ligands has been recently studied by one of us . However, because of the lack of a firm argument concerning the identification of the starting species, to date only apparent constants have been defined from the speciation change studies (performed by monitoring the radioactivity distribution).…”