title: On-line combination of aqueous-sample preparation and capillary gas chromatography.
abstract: An overview is presented of methods currently in use to combine the preparation of aqueous samples on-line with capillary gas chromatography. Two approaches can be distinguished: heartcut-orientated reversed-phase liquid chromatography-gas 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.
authors.affiliation: Free University, Department of Analytical Chemistry and Applied Spectroscopy, HV Amsterdam, The Netherlands.
authors.forename: A J
authors.initials: AJ
authors.lastname: Louter
authors.forename: J J
authors.initials: JJ
authors.lastname: Vreuls
authors.forename: U A
authors.initials: UA
authors.lastname: Brinkman
mesh_terms: D002849:Chromatography, Gas / Q000379:methods*; D014867:Water / Q000737:chemistry
chemical_list: D014867:Water