title: Comparison of methods employing gas chromatography retention data to determine vapour pressures at 298 K.
abstract: Validity of five models suggested for expressing the relationship between vapour pressures and GC retention times measured on a non-polar capillary column were tested on a common set of compounds [five homologous series of the type H-(CH2)n-Y, where Y denotes Cl, Br, CHO, OCOCH3 and COOCH3, and n varies from 6 to 14]. Standard methods of statistical analysis, as well as vapour pressure values obtained independently from direct vapour pressure measurements were used as validity criteria. For the 40-compound data set examined, the methods provided vapour pressures agreeing within 9.2-24.7% (average absolute percent error) with direct experimental data.
authors.affiliation: Department of Natural Products, Institute of Organic Chemistry and Biochemistry, Academy of Sciences of the Czech Republic, Prague. koutek@uochb.cas.cz
authors.forename: B
authors.initials: B
authors.lastname: Koutek
authors.forename: J
authors.initials: J
authors.lastname: Cvacka
authors.forename: L
authors.initials: L
authors.lastname: Streinz
authors.forename: P
authors.initials: P
authors.lastname: Vrkocová
authors.forename: J
authors.initials: J
authors.lastname: Doubský
authors.forename: H
authors.initials: H
authors.lastname: Simonová
authors.forename: L
authors.initials: L
authors.lastname: Felt
authors.forename: V
authors.initials: V
authors.lastname: Svoboda
mesh_terms: D000399:Air Pressure; D000473:Alkanes / Q000737:chemistry; D002849:Chromatography, Gas / Q000379:methods*; D011312:Pressure; D012016:Reference Values; D013696:Temperature; D014835:Volatilization
chemical_list: D000473:Alkanes