Journal
ANALYTICAL METHODS
Volume 12, Issue 19, Pages 2434-2442Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c9ay02755f
Keywords
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Funding
- National Natural Science Foundation of China [21777089]
- Natural Science Foundation of Shandong Province [ZR2018PB020, ZR2018MB040]
- Key Research and Development Program of Shandong Province [2019GSF111016, 2019JZZY010121]
- Jinan University and Institute Innovation Team Project
- Distinguished Taishan Scholars Program [ts201712063, ts20190948]
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Covalent organic frameworks with tunable porous crystallinity and outstanding stability have recently exhibited fascinating pretreatment performance as solid-phase microextraction coatings. In this report, a beta-ketoenamine-linked covalent organic framework (TpPa-1) was successfully constructed through a Schiff-base-type reaction between 1,3,5-triformylphloroglucinol (Tp) and para-phenylenediamine (Pa-1). A TpPa-1 coating was then fabricated on a stainless-steel fiber for capturing trace synthetic musks. This TpPa-1 coating exhibited strong interaction with synthetic musks because of its hydrophobicity and pi-pi affinity. This TpPa-1-based solid-phase microextraction methodology, coupled with gas chromatography-tandem mass spectrometry, provided high enrichment factors (1214-12 487), wide linearity (0.5-1000 ng L-1), low limits of detection (0.04-0.31 ng L-1), and acceptable reproducibility (relative standard deviation, <10%) for nine synthetic musks. Recoveries at three spiked levels in three types of water samples were between 76.2% and 118.7%. These results indicated the promising applicability of the TpPa-1 as a solid-phase microextraction fiber coating for reliably detecting trace concentrations of synthetic musks in the environment.
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