Selection of columns for GCXGC analysis of essential oils

A capillary column coated with a high-temperature stable wax stationary phase for gas chromatography, with a recommended maximum oven temperature of 300 °C, was installed as part of a comprehensive two-dimensional gas chromatography (GC×GC) column ensemble and the suitability of this column set-up for essential oil analysis was investigated. The separation of kunzea essential oil (Kunzea ambigua), which is known for its antibacterial activity, is used to demonstrate the suitability of the new stationary phase as the second dimension column for GC×GC analysis of essential oils.