Abstract
The methods for the rapid analysis of commercial hexane in edible oils are presented. Precolumn attachments are used to protect the analytical column from the contamination with the nonvolatile oils. Analysis is carried out by the direct injection of the oils into the precolumn or by the insertion of the precolumn containing the oils. The minimum limits of the determination are about 0.5 and 0.05ppm respectively using FID detectors under the conditions of these experiments. The detection of commercial hexane can be confirmed by the retention time and the relative ratio of the peak area in GC analysis, and the mass spectrum in GC-Mass analysis.
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