title: Needle concentrator for gas chromatographic determination of BTEX in aqueous samples.
abstract: A simple method of solventless extraction of volatile organic compounds (BTEX) from aqueous samples was developed and validated. A new arrangement of the full volume inside needle capillary adsorption trap (INCAT) device with Porapak Q as a sorbent material and wet alumina as a source of desorptive water vapour flow in a closed analytical system is presented. The analytical characteristics of developed device and of compared purge-and-trap (PTI) device for BTEX compounds are similar; the limits of detection as well as quantification are lower than 1 microg l(-1).
authors.affiliation: Faculty of Natural Sciences, Chemical Institute, Comenius University, Mlynská Dolina CH-2, SK-842 15 Bratislava, Slovak Republic. kubinec@fns.uniba.sk
authors.forename: Róbert
authors.initials: R
authors.lastname: Kubinec
authors.forename: Victor G
authors.initials: VG
authors.lastname: Berezkin
authors.forename: Renáta
authors.initials: R
authors.lastname: Górová
authors.forename: Gabriela
authors.initials: G
authors.lastname: Addová
authors.forename: Helena
authors.initials: H
authors.lastname: Mracnová
authors.forename: Ladislav
authors.initials: L
authors.lastname: Soják
mesh_terms: D000042:Absorption; D000537:Aluminum Oxide; D002849:Chromatography, Gas; D009930:Organic Chemicals / Q000032:analysis*; D011095:Polyethylenes; D012015:Reference Standards; D015203:Reproducibility of Results; D013696:Temperature; D014874:Water Pollutants, Chemical / Q000032:analysis*; D014881:Water Supply / Q000032:analysis*; D014992:Xylenes / Q000032:analysis
chemical_list: D009930:Organic Chemicals; D011095:Polyethylenes; D014874:Water Pollutants, Chemical; D014992:Xylenes; C038076:porapak P; D000537:Aluminum Oxide