https://doi.org/10.1351/goldbook.10244
Porous sorbent material containing fixed ionic sites with a complementary charge to that of the target analyte(s).
Notes:
- Ionic or ionizable compounds are extracted almost exclusively from water by electrostatic interactions with ion-exchange sorbents.
- Ion-exchange sorbents are usually classified as weak or strong depending on the identity of the ionic group and whether its charge is independent of the sample \(\rm{pH}\) (strong ion-exchanger) or can be varied by changing the sample \(\rm{pH}\) (weak ion-exchanger).