Porous sorbent with surface-bound macrocyclic ligands designed for the extraction of metal ions and some anions from aqueous solution.
Notes: - The selectivity of the extraction process depends on the stability of the host-guest complex, which can be optimized for individual ions by the choice of the macrocyclic cavity and the type of donor atoms.
- Extracted ions are recovered by elution with a solution of complexing agent with a higher binding constant than the surface-bound macrocyclic ligand.
Source:
PAC, 2016, 88, 517. 'Glossary of terms used in extraction (IUPAC Recommendations 2016)' on page 546 (https://doi.org/10.1515/pac-2015-0903)