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Temperature dependence of equivalent chain length values on capillary columns of different polarity

✍ Scribed by Sidisky, Leonard M. ;Ridley, Heloise J.

Publisher
John Wiley and Sons
Year
1991
Tongue
English
Weight
436 KB
Volume
14
Category
Article
ISSN
0935-6304

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✦ Synopsis

Abstract

The influence of temperature and capillary column stationary phase polarity on the equivalent chain length (ECL) values of unsaturated fatty acid methyl esters (FAMEs) is discussed. Comparisons are made of a bonded, nonpolar methyl silicone, bonded and nonbonded polyethylene glycols, and a highly polar, stabilized cyanosilicone stationary phase. The change in the ECL values over a 20Β° temperature range is used to demonstrate selectivity shifts and the influence of temperature on the separation of FAMEs on these phases. The effect of the degree of unsaturation of the FAME components, on the various stationary phases is also investigated.

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