Direkt zum Inhalt
Merck
  • One-pot polymerization of monolith coated stir bar for high efficient sorptive extraction of perfluoroalkyl acids from environmental water samples followed by high performance liquid chromatography-electrospray tandem mass spectrometry detection.

One-pot polymerization of monolith coated stir bar for high efficient sorptive extraction of perfluoroalkyl acids from environmental water samples followed by high performance liquid chromatography-electrospray tandem mass spectrometry detection.

Journal of chromatography. A (2018-04-14)
Xuezi Yao, Zhen Zhou, Man He, Beibei Chen, Yong Liang, Bin Hu
ZUSAMMENFASSUNG

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.

MATERIALIEN
Produktnummer
Marke
Produktbeschreibung

Sigma-Aldrich
Perfluorpentansäure, 97%
Sigma-Aldrich
Perfluornonansäure, 97%
Sigma-Aldrich
Perfluorheptansäure, ≥97.0%
Sigma-Aldrich
Perfluordecansäure, 98%
Sigma-Aldrich
Undecafluorhexansäure, ≥97.0% (T)
Sigma-Aldrich
Tricosafluordodecansäure, 95%