| Acrylamide(AA) and 5-hydroxymethylfurfural(5-HMF) are mainly formed by Maillard reaction,which have attracted much attention due to their widespread existence in foods and their significant toxicological effects.In this paper,a new method was developed for the determination of AA and 5-HMF in edible oils by micellar electrokinetic chromatography with microwave-assisted ionic liquid dispersive liquid-liquid microextraction without dispersant.Factors affecting the recovery were optimized in the experiments,including type and volume of ionic liquid,microwave assisted extraction conditions,sample volume and separation conditions of micellar electrokinetic chromatography.Under the optimized conditions,the method exhibited a good linearity in the range of 0.5-50 μg/mL with correlation coefficients(r2) not less than 0.997 1.The limits of detections(S/N=3) for AA and 5-HMF were 0.11 μg/mL and 0.70 μg/mL,respectively.The spiked recoveries were in the range of 77.9%-96.2% with relative standard deviations(RSDs) of 1.3%-5.2%.5-HMF was found in three kinds of sesame oils and a pepper oil with concentrations of 1.1-3.3 μg/mL.The proposed method was simple,efficient,inexpensive and ecofriendly,and it was applicable for the analysis of AA and 5-HMF in edible oils. |