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The solvent venting injection technique in capillary supercritical fluid chromatography

✍ Scribed by Berg, B. E. ;Greibrokk, T.

Publisher
John Wiley and Sons
Year
1989
Tongue
English
Weight
406 KB
Volume
12
Category
Article
ISSN
0935-6304

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✦ Synopsis

Asolventventingtechniqueforinjection ofvolumesuptol plon 50 pm i.d. SFC columns has been compared to direct injection methods.The peak broadening and peak splitting observed with direct injection have been examined and found to be related to the starting pressure, the column temperature, and the sample solvent, in addition to the sample volume. The solvent venting technique removed peak splitting and improved the column efficiency. With a proper selection of experimental conditions, the sample recoverywas 1 OO%.The major part of the solvent was eluted in 15-20 s. Several applications have been demonstrated.

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