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Determination of vapor pressures for nonpolar and semipolar organic compounds from gas chromatographic retention data

Journal of Chemical and Engineering Data

By:
, , ,
DOI: 10.1021/je00061a003

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Abstract

Vapor pressures for nonpolar and moderately polar organochlorine, pyrethroid, and organophosphate insecticides, phthalate esters, and organophosphate flame retardants were determined by capillary gas chromatography (GC). Organochlorines and polycyclic aromatic hydrocarbons with known liquid-phase vapor pressures (P??L) (standard compounds) were chromatographed along with two reference compounds n-C20 (elcosane) and p,p???-DDT on a 1.0-m-long poly(dimethylsiloxane) bonded-phase (BP-1) column to determine their vapor pressures by GC (P??GC). A plot of log P??L vs log P??GC for standard compounds was made to establish a correlation between measured and literature values, and this correlation was then used to compute P??L of test compounds from their measured P??GC. P??L of seven major components of technical chlordane, endosulfan and its metabolites, ??-hexachlorocyclohexane, mirex, and two components of technical toxaphene were determined by GC. This method provides vapor pressures within a factor of 2 of average literature values for nonpolar compounds, similar to reported interlaboratory precisions of vapor pressure determinations. GC tends to overestimate vapor pressures of moderately polar compounds. ?? 1990 American Chemical Society.

Additional Publication Details

Publication type:
Article
Publication Subtype:
Journal Article
Title:
Determination of vapor pressures for nonpolar and semipolar organic compounds from gas chromatographic retention data
Series title:
Journal of Chemical and Engineering Data
DOI:
10.1021/je00061a003
Volume
35
Issue:
3
Year Published:
1990
Language:
English
Publisher:
American Chemical Society
Larger Work Type:
Article
Larger Work Subtype:
Journal Article
Larger Work Title:
Journal of Chemical and Engineering Data
First page:
232
Last page:
237
Number of Pages:
6