title: Selective determination of sulfonamides from environmental water based on magnetic surface molecularly imprinting technology.
abstract: In the study, a simple and selective method based on magnetic separation technology is presented for the extraction of sulfonamides (SAs) from environmental water, followed by liquid chromatography-tandem mass spectrometry. In this method, magnetic surface molecularly imprinted polymers (Fe3O4@SiO2@MIPs) with super-paramagnetic property and high selectivity toward SAs were developed as magnetic adsorbents. The Fe3O4@SiO2@MIPs were then applied to the selective extraction of SAs from environmental water. The extraction and enrichment were accomplished simultaneously in a single step by simply stirring the mixture of adsorbents and water samples. The Fe3O4@SiO2@MIPs were characterized by scanning electron microscopy, Fourier-transform infrared spectrometry, and vibrating sample magnetometry. The adsorption thermodynamics and kinetics were employed to study the adsorption mechanism of the Fe3O4@SiO2@MIPs. And the matrix effect of the method was evaluated. Calibration curves obtained by analyzing matrix-matched standards show excellent linear relationship (R = 0.9994-0.9999) in the concentration range of 10-1000 ng L-1, and the limits of detection are in the range of 1.4-2.8 ng L-1. The relative standard deviations of intra- and inter-day obtained are in the range of 2.8 to 7.8 and 3.1 to 7.9%, respectively. The proposed method was successfully applied to determine SAs in six environmental water samples, and SAs were detectable in four of them with the concentration from 10.5 to 120.2 ng L-1.
authors.affiliation: College of Life Sciences, Jilin University, 2699 Qianjin Street, Changchun, 130012, China.|College of Chemistry, Jilin University, 2699 Qianjin Street, Changchun, 130012, China.
authors.forename: Yang
authors.initials: Y
authors.lastname: Xu
authors.affiliation: National Engineering Research Center of Seafood, School of Food Science and Technology, Dalian Polytechnic University, Dalian, 116034, China.
authors.forename: Qi
authors.initials: Q
authors.lastname: Zhao
authors.affiliation: College of Life Sciences, Jilin University, 2699 Qianjin Street, Changchun, 130012, China.
authors.forename: Liyan
authors.initials: L
authors.lastname: Jiang
authors.affiliation: College of Life Sciences, Jilin University, 2699 Qianjin Street, Changchun, 130012, China.
authors.forename: Zhengqiang
authors.initials: Z
authors.lastname: Li
authors.affiliation: College of Chemistry, Jilin University, 2699 Qianjin Street, Changchun, 130012, China. chenyanhua@jlu.edu.cn.
authors.forename: Yanhua
authors.initials: Y
authors.lastname: Chen
authors.affiliation: College of Chemistry, Jilin University, 2699 Qianjin Street, Changchun, 130012, China. dinglan@jlu.edu.cn.
authors.forename: Lan
authors.initials: L
authors.lastname: Ding
mesh_terms: D000327:Adsorption; D054802:Molecular Imprinting; D011108:Polymers / Q000737:chemistry; D012822:Silicon Dioxide / Q000737:chemistry; D052616:Solid Phase Extraction; D013449:Sulfonamides / Q000032:analysis*; D014867:Water / Q000737:chemistry*
chemical_list: D011108:Polymers; D013449:Sulfonamides; D014867:Water; D012822:Silicon Dioxide
keywords: Environmental water samples; Liquid chromatography–tandem mass spectrometry; Magnetic separation technology; Magnetic surface molecularly imprinted polymers; Sulfonamides