An analysis of various essential oils/flavors was performed using both polar and nonpolar high-efficiency 0.18-mm id GC columns. Agilent’s GC method translation software was used to translate existing 0.25-mm id column methods to 0.18-mm id columns. The ease with which this software can be used allowed for simple method development. Elution times were compared between the standard 0.25-mm id columns and the high-efficiency 0.18-mm id columns. The benefits of using hydrogen carrier gas for shorter analysis time will also be illustrated.
The document describes an analysis of essential oils and flavors using both polar (DB-WAX) and nonpolar (DB-1) high-efficiency 0.18-mm internal diameter (ID) gas chromatography (GC) columns. It compares these against standard 0.25-mm ID columns to illustrate the benefits of reduced run times without sacrificing resolution.
The text details how Agilent's GC method translation software facilitates the conversion of existing methods from larger diameter columns to high-efficiency ones, minimizing development time. Additionally, it explores the advantages of using hydrogen as a carrier gas in conjunction with these smaller ID columns to achieve further speed gains.
Switching to the high-efficiency 0.18-mm id column while continuing to use helium results in a speed gain of approximately 35%.
Using hydrogen as a carrier gas in conjunction with the high-efficiency columns results in an overall speed gain of 61%.