title: Magnetic mixed hemimicelles solid-phase extraction coupled with high-performance liquid chromatography for the extraction and rapid determination of six fluoroquinolones in environmental water samples.
abstract: In this study, a mixed hemimicelle solid-phase extraction method based on Fe3 O4 nanoparticles coated with sodium dodecyl sulfate was applied for the preconcentration and fast isolation of six fluoroquinolones in environmental water samples before high-performance liquid chromatography determination. The main factors affecting the extraction efficiency of the analytes, such as amount of surfactant, amount of Fe3 O4 nanoparticles, extraction time, sample volume, sample pH, ionic strength, and desorption conditions, were investigated and optimized. The method has detection limits from 0.05 to 0.1 ng/mL and good linearity (r ≥ 09948) in the range 0.1-200 ng/mL depending on the fluoroquinolone. The enrichment factor is ∼200. The recoveries (at spiked levels of 1, 5, and 50 ng/mL) are in the range of 79-120%.
authors.affiliation: Department of Pharmaceutics, School of Pharmacy, Jiangsu University, Zhenjiang, China.
authors.forename: Li
authors.initials: L
authors.lastname: Wang
authors.forename: Qiuxiang
authors.initials: Q
authors.lastname: Yuan
authors.forename: Guoxi
authors.initials: G
authors.lastname: Liang
authors.forename: Longbiao
authors.initials: L
authors.lastname: Shi
authors.forename: Qian
authors.initials: Q
authors.lastname: Zhan
mesh_terms: D000327:Adsorption; D000900:Anti-Bacterial Agents / Q000032:analysis* / Q000302:isolation & purification*; D002851:Chromatography, High Pressure Liquid / Q000379:methods; D024841:Fluoroquinolones / Q000032:analysis* / Q000302:isolation & purification*; D052616:Solid Phase Extraction / Q000379:methods*; D014874:Water Pollutants, Chemical / Q000032:analysis* / Q000302:isolation & purification*
chemical_list: D000900:Anti-Bacterial Agents; D024841:Fluoroquinolones; D014874:Water Pollutants, Chemical
keywords: Environmental water; Fluoroquinolones; Magnetic nanoparticles; Mixed hemimicelles; Solid-phase extraction