Gas Chromatographic Separation of Micro Quantities of Acetone, C1-C7 Alcohols, and Diacetyl

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Abstract
A very sensitive method for the determination of acetone, diacetyl, and C1–C7 alcohols by gas chromatography has been described. With 30% (w/w) polyethylene glycol 400 on celite 545 (60/80 mesh) support and a column temperature of 70°C, 0.5 µg of acetone, methanol, ethanol, iso-propanol, 0.25 µg of n-propanol, iso-butanol, n-butanol and 1.2 µg diacetyl were detected on the hydrogen flame detector. At a column temperature of 110°C, 0.1 µg of n-pentanol, n-hexanol and n-heptanol were the minimum amounts detected. The variation and reproducibility was 3% at all concentrations tested (up to 300 or 500 µg). Peak height measurements were found superior to peak area measurements.