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Capillary electrochromatography in columns packed by centripetal forces

✍ Scribed by Adam M. Fermier; Luis A. Colón

Publisher
John Wiley and Sons
Year
1998
Tongue
English
Weight
138 KB
Volume
10
Category
Article
ISSN
1040-7685

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✦ Synopsis

Important factors in packing capillary columns for capillary electrochro-Ž . matography CEC are emphasized and a new method to pack capillary columns is introduced. The new method uses centripetal forces to drive the packing material into the column. Advantages of this approach are that it offers a high impact velocity, avoids large pressure drops during packing, and provides for packing more than one capillary at once. Under normal conditions, using a commercially available CE unit, and performing detection after the packing bed, capillary columns packed by this new approach showed separation efficiencies similar to those obtained by pressure and electrokinetic packing. Columns with inner diameters between 31 and 75 m packed by the new approach showed similar performance.

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