Porous sorbent material with surface co-bonded ion exchange and alkyl functional groups.
Note: The dual extraction mechanism allows fractionation of mixtures into a neutral and acidic fraction and a basic fraction by a stepwise change in \(\pu{pH}\) of the eluting solvent.
Source:
PAC, 2016, 88, 517. 'Glossary of terms used in extraction (IUPAC Recommendations 2016)' on page 543 (https://doi.org/10.1515/pac-2015-0903)