Abstract
An evaluation is made of glass capillary columns pre-coated with dispersions of various materials (Silanox, Carbopack, Chromosorb, perlite and Porapak) and then coated with polyethylene glycol (PEG 20M) at various concentrations as stationary phase by analysing alkanes and alcohols in terms of the peak-asymmetry factor, separation factor and kinetic characteristics. Pre-coating with Silanox, Carbopack and Chromosorb yielded similar results, but with different amounts of stationary phase. Use of Carbopack for pre-coating offers the advantage that, according to the concentration of stationary phase, separation can be achieved by gas-liquid or gas-liquid-solid chromatography.
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