A Fast Isothermal GC Analysis of Spark Ignition Fuel Oxygenate Additives Using an Alternative Phase (TN-2081)

Oxygenates are chemical additives used to enhance the quality of spark ignition fuels and to boost the performance of engines. They are effective modifiers to improve acceleration of the engine which can also lower the vehicle’s fuel mileage and help keep engines clean for longer while performing more efficiently. A 100% dimethypolysiloxane phase GC column is typically used for the analysis of oxygenates however this technical work describes an alternative selectivity, specifically a Zebron ZB-5ms 5% phenyl-arylene phase. The Zebron ZB-5ms provided optimal separation of critical pairs with symmetric peaks and a fast run time of under 7 minutes at an isothermal temperature program. The Zebron ZB-5ms with the 5% phenyl-arylene phase is a great alternative selectivity to provide increased separation of polar and aromatic elements from the less polar components.