On-line combination of aqueous-sample preparation and capillary gas chromatography.
Methods currently in use to combine the preparation of aqueous samples on-line with capillary gas chromatography (GC) comprise heartcut-orientated reversed-phase liquid chromatography-GC and analyte-isolation-orientated analyte extraction-GC. These approaches either use techniques in which water is directly introduced onto the GC column, or an indirect approach in which water is eliminated, i.e., by solid-phase extraction, solid-phase microextraction or liquid-liquid extraction, prior to introduction of the analytes onto the GC column. The latter type of approach is much more successful and user-friendly, and many applications have been reported.
Vreuls
J J
JJ
Vrije Universiteit, Department of Analytical Chemistry and Applied Spectroscopy, Amsterdam, The Netherlands. vreuls@chem.vu.nl
Louter
A J
AJ
Brinkman
U A
UA
D002849:Chromatography, Gas / Q000379:methods*; D002853:Chromatography, Liquid / Q000379:methods; D014867:Water
D014867:Water