Determination of androstenone in pig fat using packed column supercritical fluid chromatography-mass spectrometry.

Packed column supercritical fluid chromatography (SFC) in combination with atmospheric pressure chemical ionisation mass spectrometry was applied to the analysis of androstenone in pig fat samples. Liquefied fat samples were dissolved in dichloromethane and analysed directly by SFC without any sample purification. Chromatographic separation was achieved with a density/pressure gradient using pure carbon dioxide as the mobile phase and the analysis resulted in a quantitation limit of 0.25 microg/g with 1 microl injection volume. Good agreement was found between the SFC method and time-resolved fluoroimmunoassay by the analysis of 15 boar back fat samples.

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