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