高等学校化学研究 ›› 2013, Vol. 29 ›› Issue (4): 647-652.doi: 10.1007/s40242-013-2516-x
FENG Xu-dong1, LIANG Fang-hui2, SU Rui1, WU Li-jie1, LI Xue-yuan1, WANG Xing-hua1, ZHANG Han-qi1, YU Ai-min1
FENG Xu-dong1, LIANG Fang-hui2, SU Rui1, WU Li-jie1, LI Xue-yuan1, WANG Xing-hua1, ZHANG Han-qi1, YU Ai-min1
摘要:
The authors performed ionic liquid-based microwave-assisted liquid-liquid microextraction(IL-based MALLME) coupled with high performance liquid chromatographic separation for the determination of 6 sulfonamides (SAs) from animal oils. The target analytes were extracted from animal oil samples with sodium hydroxide solution containing 1-butyl-3-methylimidazolium tetrafluoroborateand as the extraction solvent under microwave irradiation. The experimental parameters of the IL-based MALLME, including types of ILs, volume of IL, amount of ion-pairing agent(NH4PF6), pH value of sample solution, and extraction temperature and time were evaluated. The limits of detection and quantification obtained were in a range of 0.4―0.5 μg/kg and a range of 1.2―1.8 μg/kg, respectively. The accuracy of the method was evaluated by analyzing five spiked animal oil samples at two fortified levels(5 and 50 μg/kg), and the recoveries of SAs varied from 81.4% to 114.5% with relative standard deviations ranging from 0.8% to 9.0%.