Department of Applied Chemistry, China Agricultural University, Haidian District, Beijing, 100193, P. R. China.
J Sep Sci. 2021 Apr;44(7):1529-1536. doi: 10.1002/jssc.202001075. Epub 2021 Feb 10.
In this study, a novel method using a phosphonium-based deep eutectic solvent coupled with vortex-assisted liquid-liquid microextraction was investigated for the enrichment and separation of five benzoylurea insecticides in olive oil. The experimental factors affecting the extraction efficiency, including the extractant type, deep eutectic solvent volume, extraction time, and extraction mode, were optimized. Under optimal conditions, good linearity was observed for all target analytes, with correlation coefficients (r) ranging from 0.9971 to 0.9998; the limits of detection were in the range of 1.5 to 7.5 μg/L, and the recoveries of analytes using the proposed method ranged between 66.9 and 111.0%. The simple, rapid, and effective method was successfully applied for detecting target analytes in olive oil sample.
本研究提出了一种新型方法，使用基于鏻的深共晶溶剂结合涡旋辅助液液微萃取，用于橄榄油中五种苯甲酰脲类杀虫剂的富集和分离。实验考察了萃取效率的影响因素，包括萃取剂类型、深共晶溶剂体积、萃取时间和萃取模式等。在最优条件下，所有目标分析物均表现出良好的线性关系，相关系数（r）范围为 0.9971 至 0.9998；检出限在 1.5 至 7.5μg/L 之间，采用所提出的方法进行分析物的回收率在 66.9%至 111.0%之间。该简单、快速、有效的方法成功应用于橄榄油样品中目标分析物的检测。
