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On-line solid-phase extraction coupled to supercritical fluid chromatography to determine phenol and nitrophenols in water

1996; Elsevier BV; Volume: 755; Issue: 1 Linguagem: Inglês

10.1016/s0021-9673(96)00574-2

1873-3778

Eva Pocurull, Rosa María Marcé, Francesc Borrull, J.L. Bernal, Laura Toribio, M. L. Serna,

Mass Spectrometry Techniques and Applications

Determining of phenol and nitrophenols using solid-phase extraction on-line coupled to supercritical fluid chromatography (SFC) is studied. SFC quickly separated the compounds studied, in less than 6 min, and solid-phase extraction was used to decrease the limits of detection. C18, PLRP-S and a highly cross-linked styrene-divinylbenzene copolymer in a 10 x 3 mm I.D. laboratory-packed precolumn were tested comparatively as sorbents in the preconcentration step. Tetrabutylammonium bromide was used as ion-pair reagent in the extraction process to increase breakthrough volumes, mainly for phenol. Performance of the method was checked with tap and river waters.