Dispersive liquid-liquid microextraction and preconcentration of thallium species in water samples by two ionic liquids applied as ion-pairing reagent and extractant phase

► Simple analytical method with two ILs for determination of Tl species was developed. ► Capabilities of ionic liquids as ion pairing reagent was investigated. ► Speciation analysis of Tl in several water samples of different origins. ► Environmentally friendly microextraction with minimal waste production and sample consumption.