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Facile synthesis of trifluoromethyl covalent organic framework for the efficient microextraction of per-and polyfluorinated alkyl substances from milk products.
Metadata
Journaljournal of chromatography a4.049Date
2020 May 18
5 months ago
Type
Journal Article
Volume
2020-Jul-19 / 1623 : 461197
Author
Sun X 1, Ji W 2, Hou S 1, Wang X 3
Affiliation
  • 2. Key Laboratory for Applied Technology of Sophisticated Analytical Instruments of Shandong Province, Shandong Analysis and Test Center, Qilu University of Technology (Shandong Academy of Sciences), Jinan, 250014, China; School of Pharmaceutical Sciences, Qilu University of Technology (Shandong Academy of Sciences), Jinan, 250014, China. Electronic address: [email protected]
  • 3. Key Laboratory for Applied Technology of Sophisticated Analytical Instruments of Shandong Province, Shandong Analysis and Test Center, Qilu University of Technology (Shandong Academy of Sciences), Jinan, 250014, China; School of Pharmaceutical Sciences, Qilu University of Technology (Shandong Academy of Sciences), Jinan, 250014, China. Electronic address: [email protected]
Doi
PMIDMESH
Adsorption
Animals
Citrullus
Fruit and Vegetable Juices
Glyoxal
Hydrocarbons, Halogenated
Hydrogen-Ion Concentration
Metal-Organic Frameworks
Milk
Phenols
Reproducibility of Results
Resins, Synthetic
Solid Phase Microextraction
Urea
Abstract
Trifluoromethyl covalent organic framework (CF3-COF) is facilely synthesized at room temperature using for solid-phase microextraction (SPME). The CF3-COF coating displays an improved extraction performance for per- and polyfluorinated alkyl substances (PFASs) comparing to amorphous polymer coating, non-contained fluorine covalent organic framework coating and commercially available SPME coating. The fluorine affinity of trifluoromethyl in CF3-COF for PFASs is demonstrated using the density functional theory calculation. Following the microextraction with CF3-COF-coated fiber, the targeted PFASs are eluted with 1 mL acetonitrile and quantified by ultrahigh performance liquid chromatography tandem mass spectrometry. The low limits of detection are 0.1-0.7 pg g-1 for milk and 0.2-0.8 pg g-1 for milk powder, suggesting the outstanding sensitivity. The precision for the method ranges between 2.9 and 9.9%. The fiber-to-fiber repeatability is in the range of 4.2-9.5%. Under the optimum conditions, the relative recoveries are 91.0-110% with RSDs ≤ 10% for milk and 89.8-111% with RSDs ≤ 10% for milk powder.
Keywords: Covalent organic framework Fluorine affinity Per-and polyfluorinated alkyl substances Room temperature Solid-phase microextraction
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J Chromatogr Ajournal of chromatography a
Metadata
LocationNetherlands
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