Fast determination of sulfonamides and their acetylated metabolites from environmental water based on magnetic molecularly imprinted polymers |
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Authors: | Haiyan Chen Yiqun Zhang Bo Gao Yang Xu Qi Zhao Juan Hou Jin Yan Guijie Li Hui Wang Lan Ding Jie Ding Chun Zhao |
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Institution: | 1. College of Chemistry, Jilin University, Changchun, 130012, China 2. Joint State Key Laboratory on Integrated Optoelectronics, Jilin University, Changchun, 130012, China 3. College of Resources and Environmental Sciences, Jilin Agricultural University, Changchun, 130018, China 4. State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin, 150090, China
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Abstract: | Group-selective magnetic molecularly imprinted polymers (MMIPs) that can extract four widely used sulfonamide antibiotics and their acetylated metabolites from environmental water were synthesized in this study. The MMIPs with saturation magnetization value of 16.7 emu g-1 could be separated from the environmental water samples easily by the application of an adscititious magnetic field, reducing the time consumption of pretreatment. The extraction conditions were evaluated, and optimal extraction conditions were as follows: extraction time, 25 min; amount of polymers, 90 mg; washing solvent, 30 % methanol aqueous solution; and elution solvent, methanol–acetic acid (95:5, v/v). The target analytes were detected by liquid chromatography–tandem mass spectrometry, and the detection limits of the method are in the range of 0.38–1.32 ng L-1. The relative standard deviations of intra- and inter-day are in the range of 1.3–6.8 % and 1.7–9.1 %, respectively. The proposed method is suitable for the analysis of environmental water samples. |
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