Ionic liquid ultrasound-assisted dispersive liquid-liquid microextraction based on solidification of the aqueous phase for preconcentration of heavy metals ions prior to determination by LC-UV
Keywords: APDC; ammonium pyrrolidinedithiocarbamate; Cyphos IL 104; trihexyl(tetradecyl)phosphonium bis[(2,4,4-trimethyl)pentyl]phosphinate; DLLME; dispersive liquid-liquid microextraction; PF; preconcentration factor; HF-LPME; hollow fiber liquid-phase microextrac