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Effects of different mobile phases on immobilized carbowax 20M stationary phase in capillary liquid chromatography

✍ Scribed by Marie Horká; Miloš Krejčí; Vladislav Kahle

Publisher
John Wiley and Sons
Year
1992
Tongue
English
Weight
526 KB
Volume
4
Category
Article
ISSN
1040-7685

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✦ Synopsis

Abstract

Polyurethane immobilized Carbowax 20M stationary phase was used in capillary liquid chromatography. Mobile phases tested in this study (distilled water and aqueous solutions of the following solvents: 5.5% methanol, 5% acetone, 5, 10, 20% acetonitrile, 0.815% chloroform, 0.178% benzene and up to 0.00095% hexane) cause considerable swelling of the stationary phase polymeric film. The stationary phase swelling index reached a maximal value of S = 131. Diffusion coefficients in the stationary phase vary between 2.6 × 10^−5^ and 6.5 × 10^−4^ mm^2^ s^−1^.

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