Modification of Siliceous Supports by Thermal Treatment Its Influence on the Analysis of Polar Solutes

Abstract
In a preceeding paper we have studied and compared the texture of nine samples of commercial porous siliceous products used as supports in gas liquid chromatography with regard to their performance in the analysis of such materials as the alcohols or the amines (10). Continuation of our tests has been conducted to study supports improved by various treatments, especially by heating.

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