Fast Determination of Residual Sulfonamides in Milk by In-Tube Solid-Phase Microextraction Coupled with Capillary Electrophoresis-Laser Induced Fluorescence

Publication date: March 2018 Source:Chinese Journal of Analytical Chemistry, Volume 46, Issue 3 Author(s): ZHAO Shuo, WANG Hao-Tian, LI Ke, ZHANG Jing, WANG Xia-Yan, GUO Guang-Sheng 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. Graphical abstract

Source: Chinese Journal of Analytical Chemistry - March 10, 2018 Category: Chemistry Source Type: research