Emulsification liquid–liquid microextraction based on deep eutectic solvents: an extraction method for the determination of sulfonamides in water samples

In this study, a simple, inexpensive and sensitive method named emulsification liquid–liquid microextraction based on deep eutectic solvents (ELLME-DES) was used for the extraction of sulfonamides (SAs) from water samples, including sulfadiazine (SDZ), sulfamerazine (SMR), sulfametoxydiazine (SDD) and sulfamethoxazole (SMX).