Ionic liquids in solid-phase extraction

Supported ionic-liquid phases (SILPs), which favorably combine the properties of ionic liquids (ILs) with the advantages of solid supports, were presented in 2009 as an alternative material for solid-phase extraction (SPE). Since then, the number of SILPs used as SPE materials has increased and the results are promising.This report covers various aspects of SILPs:(1)the procedure for their preparation, which clearly depends on the support (based on silica or polymer) where the ILs are immobilized;(2)their interaction mechanisms, which are strongly linked to the SPE protocol and the target analytes; and,(3)their fields of application with a number of selected examples.This is the first review that exclusively describes all SILPs that have been developed to date as sorbents in SPE.

► Review of supported ionic-liquid phase (SILPs) used in solid-phase extraction (SPE). ► We review the different preparation approaches to support ionic liquids. ► We discuss the interaction mechanisms aroused on supported ionic-liquid phase (SILPs). ► Applications of supported ionic-liquid phase (SILPs) in solid-phase extraction (SPE).