Abstract
Chromatography in condensable gases and vapours, including the vapours of water and pure formic acid, has been investigated. Considerable advantages of this variant of chromatography in the separation of polar compounds and the analysis of aqueous solutions and dispersions have been found. Preparative-scale chromatography in ammonia, sulphur dioxide, freons and steam has been performed. Considerable reductions in separation time and improvements in peak shapes were demonstrated, even under overloading conditions. The complete condensation of all of the stream of effluent enabled the recovery of the separated substances to be increased to 95–100%.
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