Evaluation of a new hypercrosslinked polymer as a sorbent for solid-phase extraction of polar compounds.
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 microg l(-1) for phenol (Ph).
Departament de Química Analítica i Química Orgànica, Universitat Rovira i Virgili, Campus Sescelades, Marcellí domingo, s/n, 43007 Tarragona, Spain.
Núria a
Na
Fontanals
Marina
M
Galià
Peter A G
PA
Cormack
Rosa Maria
RM
Marcé
David C
DC
Sherrington
Francesc
F
Borrull
D002845:Chromatography / Q000295:instrumentation*; D014874:Water Pollutants, Chemical / Q000032:analysis
D014874:Water Pollutants, Chemical