Determination of Oxygenates and BTEX in Beverage Grade Carbon Dioxide by GC

摘要

The following gas chromatography(GC)method was developed for the simultaneous analysis of ppb levels of the oxygenates acetaldehyde,dimethyl ether(DME)and benzene,toluene,ethylene and xylene(BTEX)in beverage grade carbon dioxide by installing a second column to separate acetaldehyde and DME from the carbon dioxide and the BTEX.A four port switching valve was used for column selection.