New hydrophilic polymeric resin based on 4-vinylpyridine-divinylbenzene for solid-phase extraction of polar compounds from water |
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Authors: | Fontanals Núria Puig Patricia Galià Marina Marcé Rosa Maria Borrull Francesc |
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Affiliation: | Departament de Química Analítica i Química Orgànica, Universitat Rovira i Virgili, Imperial Tàrraco, 1, 43005 Tarragona, Spain. |
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Abstract: | A 4-vinylpyridine-divinylbenzene (VP-DVB) resin was synthesized to be used for on-line solid-phase extraction process and it was tested for a group of polar compounds. The high specific surface area and the nitrogen content of the VP-DVB sorbent increased the interactions with the polar analytes in the preconcentration process. The sorbent enabled 100 ml of water to be concentrated with recoveries higher than 70% for several polar compounds (including phenol) except for oxamyl (55%) and methomyl (43%). The method was used to analyse water samples by liquid chromatography and UV detection. Linearity was good and detection limits were 0.1-0.2 microg l(-1) for all compounds. Several tap and river water and waste water treatment plant samples were analyzed; phenol and (4-chloro-2-methyl-phenoxy)acetic acid (MCPA) were tentatively determined in some samples. |
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Keywords: | Water analysis Solid-phase extraction Stationary phases, LC 4-Vinylpyridine–divinylbenzene Polar compounds |
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