title: On-line solid-phase extraction coupled to supercritical fluid chromatography to determine phenol and nitrophenols in water.
abstract: 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.
authors.affiliation: Department de Química, Universitat Rovira i Virgili, Tarragona, Spain.
authors.forename: E
authors.initials: E
authors.lastname: Pocurull
authors.forename: R M
authors.initials: RM
authors.lastname: Marcé
authors.forename: F
authors.initials: F
authors.lastname: Borrull
authors.forename: J L
authors.initials: JL
authors.lastname: Bernal
authors.forename: L
authors.initials: L
authors.lastname: Toribio
authors.forename: M L
authors.initials: ML
authors.lastname: Serna
mesh_terms: D002851:Chromatography, High Pressure Liquid / Q000379:methods*; D009596:Nitrophenols / Q000032:analysis*; D019800:Phenol; D010636:Phenols / Q000032:analysis*; D014867:Water / Q000737:chemistry*
chemical_list: D009596:Nitrophenols; D010636:Phenols; D014867:Water; D019800:Phenol