文献类型： 外文期刊

作者： Suo, Decheng ¹ ; Zhang, Su ¹ ; Song, Zhanteng ² ; Wang, Shi ¹ ; Li, Yang ¹ ; Fan, Xia ¹ ;

作者机构： 1.Chinese Acad Agr Sci, Inst Qual Stand & Testing Technol Agr Prod, Beijing 100081, Peoples R China

2.Xinjiang Acad Agr Sci, Inst Qual Stand & Testing Technol Agr Prod, Urumqi 830091, Peoples R China

关键词： sulfonamides; ionic liquids; molecularly imprinted; poultry eggs; UPLC-MS; MS

期刊名称：MOLECULES （ 影响因子：4.927； 五年影响因子：5.11 ）

ISSN：

年卷期： 2022 年 27 卷 15 期

页码：

收录情况： SCI

摘要： An ionic liquid-modified molecularly imprinted polymer (IL-MIP) composite with sulfamethazine as a template molecule and methyl acrylic acid and 1-aminopropyl-3-methylimidazolium bromide as functional monomers was successfully synthesized. The achieved IL-MIP was characterized and evaluated in detail and utilized in the extraction and cleanup of sulfonamides (SAs) in poultry egg samples. The results demonstrated that the IL-MIP possessed a broad reorganization toward SAs and could selectively adsorb 21 kinds of SA compounds. Furthermore, the solid-phase extraction column based on the IL-MIP was used in the extraction and cleanup of 21 SAs in eggs, and the confirmatory detection of SAs was performed using ultraperformance liquid chromatography-tandem mass spectrometry. Under optimum conditions, the limits of detection (LODs) for all SAs ranged from 0.1 ng center dot g(-1) to 1.5 ng center dot g(-1), and the LOD of this method was better than those of the existing methods. The recoveries of SA compounds spiked in egg samples ranged from 84.3% to 105.8%, with low relative standard deviations (<15%). The developed method based on the IL-MIP extraction and cleanup was successfully used in the detection of 21 SAs in more than 100 real poultry egg samples. The results indicated that the proposed method was suitable for detecting 21 SAs in poultry eggs.