title: Preparation of water stable methyl-modified metal-organic framework-5/polyacrylonitrile composite nanofibers via electrospinning and their application for solid-phase extraction of two estrogenic drugs in urine samples.
abstract: The nanofibers of methyl-modified metal-organic framework-5/polyacrylonitrile composite (CH3MOF-5/PAN) were successfully synthesized and used as a solid-phase extraction (SPE) sorbent for pre-concentration of two estrogenic drugs, levonorgestrel and megestrol acetate, in urine samples. A simple, cheap and accessible electrospinning method was employed to prepare a water stable CH3MOF-5/PAN composite. The nanofibers were packed into the mini-disc cartridges to be used as SPE devices. They were also characterized by scanning electron microscopy, thermogravimetric analysis, Fourier transform infrared spectroscopy, X-ray diffraction and N2 adsorption-desorption experiments. The effects of different parameters influencing the extraction efficiency including the type of eluent and its volume, the amount of the sorbent, pH, the ionic strength, the sample volume and the reusability of the sorbent were investigated and optimized. Under the optimized conditions, the linearity varied in range of 0.05-100μgL(-1) with R(2) values higher than 0.999. The limit of detection for both of the analytes was 0.02μgL(-1). The applicability of the method was examined by analyzing the analytes in the urine samples. The recovery of the analytes varied in the range of 82.8-94.8% which shows capability of the method for the determination of the drugs in the urine samples.
authors.affiliation: Department of Chemistry, Faculty of Science, K.N. Toosi University of Technology, Tehran, Iran.
authors.forename: Mina
authors.initials: M
authors.lastname: Asiabi
authors.affiliation: Department of Marine Living Science, Ocean Sciences Research Center, Iranian National Institute for Oceanography and Atmospheric Science, Tehran, Iran. Electronic address: mehdinia@inio.ac.ir.
authors.forename: Ali
authors.initials: A
authors.lastname: Mehdinia
authors.affiliation: Department of Chemistry, Faculty of Science, K.N. Toosi University of Technology, Tehran, Iran.
authors.forename: Ali
authors.initials: A
authors.lastname: Jabbari
mesh_terms: D000180:Acrylic Resins / Q000737:chemistry*; D000327:Adsorption; D004967:Estrogens / Q000302:isolation & purification* / Q000652:urine; D008670:Metals / Q000737:chemistry; D008855:Microscopy, Electron, Scanning; D057139:Nanofibers / Q000737:chemistry*; D009994:Osmolar Concentration; D052616:Solid Phase Extraction / Q000295:instrumentation* / Q000379:methods*; D017550:Spectroscopy, Fourier Transform Infrared; D014867:Water / Q000737:chemistry*; D014874:Water Pollutants, Chemical / Q000032:analysis / Q000302:isolation & purification; D014961:X-Ray Diffraction
chemical_list: D000180:Acrylic Resins; D004967:Estrogens; D008670:Metals; D014874:Water Pollutants, Chemical; D014867:Water; C010504:polyacrylonitrile
keywords: Composite nanofibers; Electrospinning; Levonorgestrel; Megestrol acetate; Metal–organic framework-5/Polyacrylonitrile; Urine