Abstract
Aroma release from alcoholic solutions is of great interest but the presence of excess ethanol in the APCI-MS system causes non-quantitative ionisation. A recent modification to the APCI source has allowed the study of the liquid/air partitioning of volatiles from ethanolic solutions under both static equilibrium and dynamic headspace conditions. A decrease in the static equilibrium headspace concentration of aroma compounds from ethanolic solutions was noted, depending on their hydrophobicity, while, under dynamic conditions ethanol generally enhanced volatile delivery.
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