Determination of sulfonamides in butter samples by ionic liquid magnetic bar liquid-phase microextraction high-performance liquid chromatography
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- 作者：Lijie Wu ; Ying Song ; Mingzhu Hu ; Xu Xu…
- 关键词：Liquid ; phase microextraction ; Ionic liquid magnetic bar ; Sulfonamides ; Butter ; High ; performance liquid chromatography
- 刊名：Analytical and Bioanalytical Chemistry
- 出版年：2015
- 出版时间：January 2015
- 年：2015
- 卷：407
- 期：2
- 页码：569-580
- 全文大小：1,124 KB
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16. Nguyen TD, Lee MH, Lee GH (2010) Rapid determination of 95 pesticides in soybean oil - 刊物类别：Chemistry and Materials Science
- 刊物主题：Chemistry
Analytical Chemistry
Food Science
Inorganic Chemistry
Physical Chemistry
Monitoring, Environmental Analysis and Environmental Ecotoxicology - 出版者：Springer Berlin / Heidelberg
- ISSN：1618-2650
文摘
A novel, simple, and environmentally friendly pretreatment method, ionic liquid magnetic bar liquid-phase microextraction, was developed for the determination of sulfonamides in butter samples by high-performance liquid chromatography. The ionic liquid magnetic bar was prepared by inserting a stainless steel wire into the hollow of a hollow fiber and immobilizing ionic liquid in the micropores of the hollow fiber. In the extraction process, the ionic liquid magnetic bars were used to stir the mixture of sample and extraction solvent and enrich the sulfonamides in the mixture. After extraction, the analyte-adsorbed ionic liquid magnetic bars were readily isolated with a magnet from the extraction system. It is notable that the present method was environmentally friendly since water and only several microliters of ionic liquid were used in the whole extraction process. Several parameters affecting the extraction efficiency were investigated and optimized, including the type of ionic liquid, sample-to-extraction solvent ratio, the number of ionic liquid magnetic bars, extraction temperature, extraction time, salt concentration, stirring speed, pH of the extraction solvent, and desorption conditions. The recoveries were in the range of 73.25-03.85?% and the relative standard deviations were lower than 6.84?%. The experiment results indicated that the present method was effective for the extraction of sulfonamides in high-fat content samples. Graphical abstract Ionic liquid magnetic bar (a) and extraction procedure of SAs from butter sample (b)