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Influence of some inorganic salts on the polarity of apolar polymer phases in capillary gas chromatography

✍ Scribed by Traitler, H. ;Rossier, M.

Publisher
John Wiley and Sons
Year
1982
Tongue
English
Weight
239 KB
Volume
5
Category
Article
ISSN
0935-6304

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✦ Synopsis

Abstract

Different stationary phases were prepared by mixing a series of inorganic salts with dimethylsiloxane polymer (SE‐30) and then tested by capillary gas chromatography. It was demonstrated that the polarity (as evaluated by measurement of Rohrschneider constants) of the mixed stationary phases, which is inferior or equal to that of a medium‐polar OV‐25 phases, reached even lower values than SE‐30 alone. The influence of NaF, NaCl, NaBr, AgNO~3~, and other inorganic salts on the polarity of capillaries is reflected by a better resolution and shorter retention time of cis/trans isomers of fatty acid methyl esters (FAMES) as well as positional isomers of triglycerides.

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## Abstract In capillary gas‐solid chromatography where interactions between solute and carrier gas and adsorption of the solute on the surface of the adsorbent are considered to be imperfect, it has been shown that chromatographic retention is determined largely by adsorption processes. It has bee