期刊
FOOD ANALYTICAL METHODS
卷 10, 期 10, 页码 3368-3374出版社
SPRINGER
DOI: 10.1007/s12161-017-0897-z
关键词
Ionic liquids; Sodium dodecyl sulfate; Capillary electrophoresis; Acephate and isocarbophos
资金
- National Natural Science Foundation of China
- Poverty Alleviation Development Projects of Shandong, China
In this study, an improved method of capillary electrophoresis for simultaneous detection of acephate and isocarbophos was developed. The ionic liquids (ILs) of 1-butyl-3-methylimidazolium tetrafluoroborate ([BMIM]BF4) and sodium dodecyl sulfate (SDS) were added as modifiers in the background electrolyte (BGE) for capillary electrophoresis to enhance the separation efficiency of acephate and isocarbophos. The separation conditions in terms of the concentrations of the IL, SDS, and pH were optimized. The limits of detection of the method for acephate and isocarbophos were 0.15 and 0.08 mg/kg. The relative standard deviation (RSD) for five replicates of acephate and isocarbophos solution (5.0 mg/L) was 1.9-3.9%, respectively. To evaluate the accuracy of this method, cucumber, cauliflower, spinach, and carrot samples spiked with acephate and isocarbophos were extracted and analyzed with good recoveries from 76.8 to 88.8%. This method was then verified by gas chromatography method.
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