Double salts of ionic-liquid-based surfactants in microextraction: application of their mixed hemimicelles as novel sorbents in magnetic-assisted micro-dispersive solid-phase extraction for the determination of phenols
1. área de Química Analítica, Departamento de Química, Universidad de La Laguna, 38206, La Laguna (Tenerife), Spain 2. Department of Chemistry, Iowa State University, Ames, IA, 50011, USA