Ionic Liquids in the Microextraction Context
Pp. 70-134 (65)
María J. Trujillo-Rodríguez, Verónica Pino, Juan H. Ayala and Ana M. Afonso
The structural versatility of ionic liquids (ILs), the wide range of interest
properties that can present: low to negligible vapor pressure, from water-soluble to
water-insoluble, from medium viscosity to high viscosity…, their synthetic tuneability,
together with their impressive solvation abilities for analytes of quite different nature,
make their use in microextraction techniques an obvious approach of great interest.
Thus, ILs and a group of interesting derivatives, such as polymeric ionic liquids (PILs)
and IL-based surfactants, pure, mixed, or combined with other materials forming
hybrid sorbents, have been used in all variants of liquid-phase and solid-based
This chapter will give an exhaustive overview of existing approaches that combine ILs
and derivatives in liquid-phase microextraction (LPME) modes such as single-drop
microextraction (SDME), hollow fiber liquid-phase microextraction (HF-LPME) and
dispersive liquid-liquid microextraction (DLLME), including all their variants; and also
in solid-based microextraction methods, such as micro-solid-phase extraction (μ-SPE),
solid-phase microextraction (SPME), stir-bar sorptive extraction (SBSE), and stir-cake
sorptive extraction (SCSE).
Dispersive liquid-liquid microextraction, Environmental applications,
Food applications, Hollow-fiber liquid phase-microextraction, Ionic liquids,
Ionic liquid-based surfactants, Liquid-phase microextraction, Micro-solid-phase
extraction, Polymeric ionic liquids, Single-drop microextraction, Solid-phase extraction, Solid-phase microextraction, Stir-bar sorptive extraction, Stir-cake sorptive
Departamento de Química, Área de Química Analítica, Universidad de La Laguna (ULL), La Laguna (Tenerife), 38206, Spain.