Journal
JOURNAL OF CHROMATOGRAPHY A
Volume 1553, Issue -, Pages 7-15Publisher
ELSEVIER
DOI: 10.1016/j.chroma.2018.04.014
Keywords
Perfluoroalkyl acids (PFAAs); Stir bar sorptive extraction; Poly(1-vinylimidazole-ethyleneglycol dimethacrylate) monolith; High performance liquid chromatography-electrospray tandem mass spectrometry; Environmental water samples
Funding
- National Nature Science Foundation of China [20775057, 21575107, 21575108, 21675118, 21507044]
- Science Fund for Creative Research Groups of NSFC [20921062]
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences [KF2010-04]
- Large-scale Instrument and Equipment Sharing Foundation of Wuhan University [LF20170799]
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In this work, poly(1-vinylimidazole-ethyleneglycol dimethacrylate) (poly(VI-EDMA)) monolith coated stir bars were synthesized by one-pot polymerization, and they exhibited higher extraction efficiency and faster extraction dynamics for selected PFAAs than commercial ethylene glycol modified silicone (EG-silicone) and polydimethylsiloxane (PDMS) coated stir bars. Taking eleven PFAAs as target analytes, including C4-C12 perfluoroalkyl carboxylates (PFCAs) and C6, C8 perfluoroalkane sulfonates (PFSAs), a method combining monolith-based stir bar sorptive extraction (SBSE) with high performance liquid chromatography (HPLC) - electrospray tandem mass spectrometry (ESI-MS/MS) was proposed for the determination of multiplex PFAAs in environmental water samples. Under the optimized conditions, low limits of detection (0.06-0.40 ng/L) and wide linear range (0.6-400 ng/L) were obtained for target PFAAs with. The developed method was then applied for the analysis of target PFAAs in environmental water samples, and recoveries of 80.1-117% and 80.3-122% were obtained for target PFAAs in spiked Yangtze River and East Lake water samples respectively. (C) 2018 Elsevier B.V. All rights reserved.
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