title: Determination and removal of sulfonamides and quinolones from environmental water samples using magnetic adsorbents.
abstract: In this study, the magnetic materials known as polymerized ionic liquid@3-(trimethoxysilyl)propyl methacrylate@Fe3O4nanoparticles were synthesized and utilized as potential adsorbents. First, these nanoparticles were applied to the analysis of sulfonamides and quinolones present in different water samples using magnetic solid phase extraction and high-performance liquid chromatography. Under optimized conditions, the developed method showed excellent detection sensitivity, with limits of detection (S/N = 3) and quantification limits (S/N = 10) within 0.2-1.0 and 0.8-3.4 μg/L, respectively. The spiked recoveries of the SAs and QNs in environmental water samples ranged from 83.5 to 103.0%, with RSDs of less than 4.5%. In addition, the adsorbents effectively removed sulfamethoxazole and ofloxacin present in existing aquatic environments. The adsorption kinetics and isotherms of sulfamethoxazole and ofloxacin on the magnetic adsorbents were studied to assess removal performance. The results indicate that the adsorption process follows a pseudo-second-order mechanism, which reveals that the sorption mechanism is the rate-limiting step and produces high qmaxvalues (sulfamethoxazole = 70.35 mg/g and ofloxacin = 48.95 mg/g), thus demonstrating the enormous adsorption capacity of these magnetic adsorbents.
authors.affiliation: School of Chemistry and Material Science, Shanxi Normal University, Shanxi Linfen, P.R. China.
authors.forename: Hao
authors.initials: H
authors.lastname: Wu
authors.affiliation: School of Chemistry and Material Science, Shanxi Normal University, Shanxi Linfen, P.R. China.
authors.forename: Yating
authors.initials: Y
authors.lastname: Shi
authors.affiliation: School of Chemistry and Material Science, Shanxi Normal University, Shanxi Linfen, P.R. China.
authors.forename: Xiaozhen
authors.initials: X
authors.lastname: Guo
authors.affiliation: School of Chemistry and Material Science, Shanxi Normal University, Shanxi Linfen, P.R. China.
authors.forename: Shuangli
authors.initials: S
authors.lastname: Zhao
authors.affiliation: School of Chemistry and Material Science, Shanxi Normal University, Shanxi Linfen, P.R. China.
authors.forename: Juanli
authors.initials: J
authors.lastname: Du
authors.affiliation: School of Chemistry and Material Science, Shanxi Normal University, Shanxi Linfen, P.R. China.
authors.forename: Hongping
authors.initials: H
authors.lastname: Jia
authors.affiliation: School of Chemistry and Material Science, Shanxi Normal University, Shanxi Linfen, P.R. China.
authors.forename: Lina
authors.initials: L
authors.lastname: He
authors.affiliation: School of Chemistry and Material Science, Shanxi Normal University, Shanxi Linfen, P.R. China.
authors.forename: Liming
authors.initials: L
authors.lastname: Du
mesh_terms: D000327:Adsorption; D002851:Chromatography, High Pressure Liquid; D008280:Magnetics; D008689:Methacrylates; D053758:Nanoparticles; D017646:Organosilicon Compounds; D015363:Quinolones / Q000302:isolation & purification*; D052616:Solid Phase Extraction; D013449:Sulfonamides / Q000302:isolation & purification*; D014874:Water Pollutants, Chemical / Q000302:isolation & purification*
chemical_list: D008689:Methacrylates; D017646:Organosilicon Compounds; D015363:Quinolones; D013449:Sulfonamides; D014874:Water Pollutants, Chemical; C505504:3-(trimethoxysilyl)propyl methacrylate
keywords: Adsorbents; Ionic liquids; Magnetic solid-phase extraction; Quinolones; Sulfonamides