Am(III)/Eu(III) separation at low pH using synergistic mixtures composed of carboxylic acids and neutral nitrogen polydendate ligands

This paper deals with a potential An(III)/Ln(III) separation system based on the use of synergistic systems composed of alpha-substituted carboxylic acids and polydendate nitrogen soft donor ligands, 2,2':6',6 " terpyridine (Tpy) and 2,4,6-tri-2-pyridyl-1,3,5-triazine (TPTZ), and their respective lipophilic derivatives. The first experiments concern Am(III)/Eu(III) separation as a model for An(III)/Ln(III) group separation. (C) 1998 Elsevier Science S.A.