Ion exchange interactions occur between a sorbent that carries a charge and a compound of opposite charge. This electrostatic interaction is reversible by neutralizing the sorbent and /or analyte. Ion exchange bonds can also be disrupted by introduction of a “counter ion” to compete with the analyte for binding sites on the sorbent.
UCT offers a variety of both weak and strong anion exchange columns. Anion sorbents include aminopropyl, PSA, diethylamino, polyimine, and a selection of quaternary amines with various counter ions.