Determination of Estrogens in Wastewater by Ultrasound-Assisted Ionic Liquid Dispersive Liquid-Phase Microextraction Coupled with High Performance Liquid Chromatography

A novel method was established for the determination of estrogens in wastewater by ultrasonic assisted ionic liquid(1-butyl-3-methylimidazolium hexafluorophosphate,C4MIM \)dispersive liquid-phase microextraction coupled with high performance liquid chromatography.Some conditions that might affect the extraction efficiency,such as volume of solution,pH value of solution,ultrasonic time,hierarchical standing time,and centrifuging time were optimized.The results indicated that the optimal conditions were: 6 ...