title: GC profiles of volatile constituents from human urine obtained by closed loop stripping, purge and trap technique and simultaneous stem distillation-extraction.
abstract: Different techniques like "closed loop stripping" [CLSA], "purge and trap" [PTI], and continuous steam distillation extraction [SDE] were used to establish GC profiles of major histocompatibility complex-associated volatile constituents of human urine and statistically evaluated for reliability. Of the three methods investigated, PTI appeared to be superior for the detection of very volatile substances, whereas SDE was the most efficient one with respect to yield. A number of short to medium-chain ketones, 4-hydroxy-3-methoxy-styrene, menthol and nicotine were identified in preliminary analyses.
authors.affiliation: Institut für Organische Chemie, Universität Erlangen-Nürnberg, Bundesrepublik Deutschland.
authors.forename: H J
authors.initials: HJ
authors.lastname: Bestmann
authors.forename: K
authors.initials: K
authors.lastname: Haberkorn
authors.forename: O
authors.initials: O
authors.lastname: Vostrowsky
authors.forename: R
authors.initials: R
authors.lastname: Ferstl
authors.forename: F
authors.initials: F
authors.lastname: Eggert
mesh_terms: D002849:Chromatography, Gas / Q000379:methods; D006139:Guaiacol / Q000031:analogs & derivatives / Q000652:urine; D006801:Humans; D007659:Ketones / Q000652:urine; D008610:Menthol / Q000652:urine; D009538:Nicotine / Q000652:urine; D016482:Urinalysis / Q000295:instrumentation* / Q000379:methods*; D014835:Volatilization
chemical_list: D007659:Ketones; D008610:Menthol; D006139:Guaiacol; D009538:Nicotine; C014245:4-vinylguaiacol