Dispersive liquid-liquid microextraction combined with sweeping micellar electrokinetic chromatography for the determination of some neonicotinoid insecticides in cucumber samples

► Combined use of dispersive liquid-liquid microextraction with sweeping micellar electrokinetic chromatography. ► Enrichment factors of as high as 4000-10,000-fold. ► Good recoveries and reproducibilities with a short analysis time.