Fast Determination of Residual Sulfonamides in Milk by In-Tube Solid-Phase Microextraction Coupled with Capillary Electrophoresis-Laser Induced Fluorescence |
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Authors: | ZHAO Shuo WANG Hao-Tian LI Ke ZHANG Jing WANG Xia-Yan GUO Guang-Sheng |
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Institution: | Beijing Key Laboratory for Green Catalysis and Separation, Department of Chemistry and Chemistry Engineering, Beijing University of Technology, Beijing 100124, China |
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Abstract: | A fast, feasible, eco-friendly method for determination of sulfonamides using in-tube solid-phase microextraction (IT-SPME) coupled with capillary electrophoresis-laser induced fluorescence was developed. The graphene-embedded porous polymer monolithic column prepared via in-situ UV polymerization was proposed as the IT-SPME column. The method was applied to determine residual sulfonamides in a real milk sample, and an amount of 3.7 ng mL?1 sulfamethazine was detected, which was much lower than the maximum residue limit. |
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Keywords: | In-tube solid-phase microextraction Capillary electrophoresis-laser induced fluorescence Sulfonamides |
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