title: Construction of a portable sample preparation device with a magnetic poly(methacrylic acid-co-ethylene dimethacrylate) monolith as the extraction medium and its application in the enrichment of UV filters in water samples.
abstract: A portable sample preparation device with a magnetic polymer monolith as the extraction medium was constructed. The monolith was synthesized by polymerizing methacrylic acid and ethylene dimethacrylate around a cylindrical magnet. In this way, the monolith with a magnetic core could be readily attached to the extraction device by magnetism. The constructed device was evaluated for the enrichment of UV filters in water samples, followed by high-performance liquid chromatographic analysis. The extraction efficiency for the targets was satisfactory with no matrix interference. Good linearities were obtained for the UV filters with the correlation coefficients >0.9986. The limits of detection and quantification for the UV filters were 0.3-0.8 and 1.0-2.4 ng/mL, respectively. The recoveries of the UV filters from the spiked water samples at the concentration of 100 ng/mL were 95.3-101.7%, with relative standard deviations <10%. Accordingly, the proposed portable device was demonstrated to be suitable for on-site simultaneous sampling, purification, and preconcentration within a single step.
authors.affiliation: Tongji School of Pharmacy, Huazhong University of Science and Technology, Wuhan, China.
authors.forename: Jing
authors.initials: J
authors.lastname: Li
authors.forename: Li
authors.initials: L
authors.lastname: Xu
authors.forename: Qiong-Wei
authors.initials: QW
authors.lastname: Yu
authors.forename: Zhi-Guo
authors.initials: ZG
authors.lastname: Shi
authors.forename: Ting
authors.initials: T
authors.lastname: Zhang
authors.forename: Yan
authors.initials: Y
authors.lastname: Liu
mesh_terms: D002851:Chromatography, High Pressure Liquid; D005026:Ethylene Glycols / Q000138:chemical synthesis / Q000737:chemistry*; D005374:Filtration; D060328:Magnetic Phenomena; D008689:Methacrylates / Q000138:chemical synthesis / Q000737:chemistry*; D015394:Molecular Structure; D014466:Ultraviolet Rays; D014874:Water Pollutants, Chemical / Q000737:chemistry / Q000302:isolation & purification*
chemical_list: D005026:Ethylene Glycols; D008689:Methacrylates; D014874:Water Pollutants, Chemical; C502776:poly(methacrylic acid-ethylene glycol dimethacrylate)
keywords: Magnetic polymer monoliths; On-site sample preparation; Portable extraction devices