Summary
Microbore columns of 1 mm i.d. have turned out to be very suitable for the achievement of efficient columns.
The packing procedure for stainless steel 1 mm i.d. columns from 5 to 100 cm in length was studied. Stationary phases used were: pure silica gel, octyl, octadecyl and amino bonded silicas. The main parameters (slurry composition, packing system, choice of materials) are discussed.
Short columns packed with 3 or 5μm particles allow high speed separations. A separation in 18 seconds is described.
Very high plate numbers can be obtained with long columns. With 7–8μm particles, a 1 m column can produce 50,000 plates (h=3). Columns can be joined without loss of efficiency. 270 000 theoretical plates were obtained on a 6 m adsorption column with a test mixture. In reversed-phase chromatography, bile acid sodium salts can be separated on a 1 m column. In adsorption chromatography, details are given of the separation of a polystyrene oligomer sample, as well as a light and a heavy petroleum distillate samples on a 2 m column with refractive index detection in the last-case.
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Menet, H., Gareil, P., Caude, M. et al. Packing and performance of microbore columns for adsorption and partition chromatography. Chromatographia 18, 73–80 (1984). https://doi.org/10.1007/BF02268460
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DOI: https://doi.org/10.1007/BF02268460