title: [Methods of vapour-phase extraction and extractive freezing for the analysis of organic substances dissolved in mineral waters of the Sochi spa area].
abstract: The chromatomass-spectrometry method was for the first time employed to study organic substances isolated by vapour-phase extraction from the Matseta sulfide-containing mineral water near Sochi. These substances are found to contain sulphur in different valent forms. A new technique has been developed for the detection of monobasic C2-C6 carboxylic acids in natural mineral water based on the combination of sequential vapour extraction and extractive freezing of the analytes. The proposed method is readily reproducible and has a detection limit of 0.03 mg/l for the analysis of carboxylic acids in water.
authors.forename: V N
authors.initials: VN
authors.lastname: Bekhterev
authors.forename: E A
authors.initials: EA
authors.lastname: Kabina
authors.forename: T M
authors.initials: TM
authors.lastname: Chekhova
authors.forename: V D
authors.initials: VD
authors.lastname: Ostapishin
mesh_terms: D002264:Carboxylic Acids / Q000032:analysis*; D002849:Chromatography, Gas; D005615:Freezing; D006294:Health Resorts; D006863:Hydrogen-Ion Concentration; D008900:Mineral Waters / Q000032:analysis*; D008962:Models, Theoretical; D012426:Russia; D012995:Solubility; D014835:Volatilization
chemical_list: D002264:Carboxylic Acids; D008900:Mineral Waters