Evaluation of a new hypercrosslinked polymer as a sorbent for solid-phase extraction of polar compounds

Fontanals, N. and Galia, M. and Cormack, P.A.G. and Marce, R.M. and Sherrington, D.C. and Borrull, F. (2005) Evaluation of a new hypercrosslinked polymer as a sorbent for solid-phase extraction of polar compounds. Journal of Chromatography A, 1075 (1-2). pp. 51-56. ISSN 0021-9673

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Abstract

A new hypercrosslinked polymer (HXLGp) with hydrophilic character due to the presence of hydroxyl moieties has been tested as a sorbent for the solid-phase extraction (SPE) of several polar compounds from water samples. This new sorbent enables the on-line extraction of 300 ml of sample with recoveries higher than 80% for polar compounds such as oxamyl, methomyl or desisopropylatrazine (DIA). The HXLGp has also been compared to other commercially available sorbents such as Oasis® HLB (hydrophilic macroporous), to hydrophobic hypercrosslinked resins and to a previously synthesized sorbent based on N-vinylimidazole-divinylbenzene. The results are consistently better with the new synthesized sorbent. The method was successfully applied to the on-line SPE-HPLC of tap and river water samples. The validation with river water samples provided good linearity range and detection limits between 0.03 for methomyl and 4-nitrophenol (4NP) to 0.2 andmu; g l(-1) for phenol (Ph). andCOPY;