Measurement of Henry coefficients by capillary columns coated with slightly polar solvents

Á Polgár, Z. Juvancz, A. Dallos

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

The specific retention volumes and Henry coefficients measured on packed columns are compared with those calculated via retention indices determined on wall coated open tubular capillary columns. The stationary phase liquids used were derivatives of a branched paraffin, C78H158, where a methyl or ethyl group of the paraffin was replaced by OH, CN, OCH3 and SH groups. The retention indices of a series of molecular probes of varying polarity (aromatics, 1-chloroalkanes, 1-acetoxy-alkanes, 1-alkanols, 2-alkanones) were determined at T = 403.15 K on fused-silica open tubular columns prepared by static coating that gave stable and uniform solvent films. After obtaining the absolute data on packed columns for n-alkanes, the specific retention volumes and Henry coefficients of the solutes were calculated. The retention data obtained on both columns showed good agreement.

Original languageEnglish
JournalChromatographia
Volume51
Issue numberSUPPL. 2
Publication statusPublished - 2000

Fingerprint

Alkanes
Paraffin
Molecular Probes
Fused silica
Silicon Dioxide
Derivatives
Coatings
Liquids

Keywords

  • Capillary gas chromatography
  • Henry coefficients
  • Retention indices
  • Specific retention volumes

ASJC Scopus subject areas

  • Clinical Biochemistry
  • Analytical Chemistry

Cite this

Measurement of Henry coefficients by capillary columns coated with slightly polar solvents. / Polgár, Á; Juvancz, Z.; Dallos, A.

In: Chromatographia, Vol. 51, No. SUPPL. 2, 2000.

Research output: Contribution to journalArticle

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