The identification of peaks in gas chromatography by the use of subtractor columns : II. The action of free fatty acid phase on aldehydes

Abstract

The use of FFAP as an aldehyde subtractor has been re-examined. The material is an unsatisfactory aldehyde subtractor as it has low capacity, deteriorates on keeping, and often causes a large increase in the retention time of non-aldehydic compounds. The subtraction is also time- and temperature-sensitive. It is suggested that the subtraction involves an acid-catalyzed aldol condensation.