During recent years it has been noted that the stationary phases in gas chromatography, during the lifetime of the columns, are subject to transformations which affect the results of quantitative analyses or the retention volumes in qualitative ZWKdyScS. I<ELLER et d. l--3 have reviewed in detail t
Stability of He II phase separation - investigations with the active phase separator
β Scribed by H.-D. Denner; G. Klipping; I. Klipping; U. Schmidtchen
- Publisher
- Elsevier Science
- Year
- 1984
- Tongue
- English
- Weight
- 391 KB
- Volume
- 24
- Category
- Article
- ISSN
- 0011-2275
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β¦ Synopsis
External influences or internal disturbances may result in phase separation instabilities which could lead to operational failure of He II space cooling systems. Possible instabilities are defined and, using the active phase separator, suitable measures for prevention and control are discussed. Experimental results with a superleak arranged in parallel to the active phase separator indicate an additional possibility for adaptation of the latter to specific demands.
Stability of
He II phase separation --investigations with the active phase separator H.-D. Denner, G. Klipping, I. Klipping and U. Schmidtchen
π SIMILAR VOLUMES
Crosslinking experiments for immobilization of the well-known chiral stationary phases XE 6O-~-valine-(S)-and XE 60-~-valine-(R)-a -phenylethylamide within capillary columns have been successfully carried out. Crosslinking was also obtained with mixtures of the chiral compound acrylyl-L-valine-(S)-a