Multiple functional ionic liquids based dispersive liquid-liquid microextraction combined with high performance chromatography for the determination of phenolic compounds in water samples

Multiple functional ionic liquids [BSO3HMIm][OTf] and [EMIm][BF4] serving as dispersive solvent were first used in DLLME. With the aid of acidic ionic liquids, the phenolic compounds were directly extracted from environmental water samples without pH adjustment.