Abstract
Two 4-vinylimidazole-divinylbenzene (4VIm-DVB) polymers were synthesized and applied as sorbents for on-line solid-phase extraction (SPE) followed by liquid chromatography for analyzing polar compounds in aqueous samples. The new sorbents (4VIm-DVB) were compared to another sorbent that had been previously synthesized by our group (N-vinylimidazole-divinylbenzene (NVIm-DVB)) and to the commercial OASIS® HLB and StrataTM X.
All the sorbents enabled 100 mL of sample to be on-line concentrated with good recoveries for the studied polar compounds. Real water samples were analyzed using NVIm-DVB and OASIS® HLB as SPE sorbent, for which the best results were obtained.
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Acknowledgement.
The authors gratefully acknowledge the Departament d’Universitats, Recerca i Societat de la Informació for financial support (2001SGR 00319) and for N. Fontanals’ predoctoral grant (2001FI 00641). We would also like to thank Phenomenex (Torrence, CA, USA) for providing StratraTM X sorbent.
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Fontanals, N., Galià, M., Marcé, R. et al. Comparison of Hydrophilic Polymeric Sorbents for On-Line Solid-Phase Extraction of Polar Compounds from Aqueous Samples. Chromatographia 60, 511–515 (2004). https://doi.org/10.1365/s10337-004-0419-1
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DOI: https://doi.org/10.1365/s10337-004-0419-1