Journal
JOURNAL OF CHROMATOGRAPHY A
Volume 1566, Issue -, Pages 23-31Publisher
ELSEVIER
DOI: 10.1016/j.chroma.2018.06.053
Keywords
Polymer monolith; Melamine-based covalent organic polymer; Ionic liquid; Synthetic phenolic antioxidants
Funding
- National Natural Science Foundation of China [21575049]
- Open Project of State Key Laboratory of Supramolecular Structure and Materials, Jilin University, China [sklssm201617]
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In this study, a hybrid composite containing melamine-based covalent organic polymer (MCOP) and ionic liquid (IL) was designed and employed for the functionalization of polymer monolith. The obtained polymer monolithic material was confirmed by scanning electron microscopy, Fourier-transformed infrared spectroscopy, X-ray photoelectron spectroscopy, and thermal gravimetric analysis. A polymer monolith microextraction (PMME) strategy was established based on the monolith for the enrichment of synthetic phenolic antioxidants, exhibiting high sensitivity, good stability and repeatability. Intra-day and inter-day relative standard deviations were both less than 10%. The developed PMME-HPLC method was applied to the preconcentration and determination of synthetic phenolic antioxidants in cosmetic samples and assessed through recovery studies. The developed polymer monolithic material had great potential as a candidate in the preconcentration field for PMME. (C) 2018 Elsevier B.V. All rights reserved.
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