Abstract
The use of water vapor and its mixtures in preparative gas chromatography makes it possible to reduce the costs of the operation to regulate the column selectivity, and to ensure that the separated substances will be completely trapped at the column exit without resorting to low temperatures [1-4]. The effects of water vapor on the sorption of various substances being separated in the preparative regime has not been investigated adequately. In the present work we have examined the influence of water vapor, when used as an eluent, on the shape and retention of peaks for polar and nonpolar sorbates, at various temperatures and column loadings.
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