The negative effect of the liquid stationary phase film thickness on the column efficiency is strongest for peaks with retention factors, k, in the vicinity of k = 0.3 -0.4 and rapidly diminishes with the departure of k from that region. Additionally, at the high pressure drop required for fast anal
The theory of gas-liquid chromatography : The influence of the thickness of the stationary liquid film
β Scribed by B.G. Belenky; A.I. Rusanov; L.D. Turkova
- Publisher
- Elsevier Science
- Year
- 1973
- Tongue
- English
- Weight
- 497 KB
- Volume
- 80
- Category
- Article
- ISSN
- 1873-3778
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β¦ Synopsis
The thermodynamic theory of gas-liquid chromatography has been developed, taking into account specific properties of thin films of the liquid phase expressed in terms of the "disjoining pressure". Equations were derived to describe the dependence of the retention volume on the thickness of the stationary phase over the whole range of thickness. The results are in good agreement with experimental values.
A chromatographic method for determining the constants of disjoining pressure is suggested.
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