Ion-pair solid-phase extraction

Solid-phase extraction (SPE) is a technique widely employed by analytical c hemists. SPE cartridges are available in a wide variety of formats containi ng media with diverse chemistries. This paper will review ion-pair SPE, one of the less frequently applied, and presumably less well-known techniques. Advantages of this technique over more conventional reversed-phase or ion- exchange SPE include selectivity, compatibility with rapid evaporative conc entration, and potential application to multiclass multiresidue analysis. ( C) 2000 Published by Elsevier Science B.V.