Ionic liquid-based ultrasound-assisted emulsification microextraction coupled with high performance liquid chromatography for the determination of four fungicides in environmental water samples

► IL-USAEME combined with HPLC was developed for the determination of fungicides. ► The enrichment factors of this method are from 88 to 137. ► The extraction recoveries are in the range of 83.9-116.2%. ► The limits of detection are 0.73-2.2 ng mL−1.