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Abstract
The application of single drop extraction (SDE) for isolation and enrichment of carbonyl compounds after derivatization with O‐(2,3,4,5,6‐pentafluorobenzyl)hydroxylamine in spirits and vodkas is discussed. The optimal parameters (extraction volume, drop volume, content of ethyl alcohol, sample volume, temperature and time of extraction) for isolation and preconcentration of C1–C6 aldehydes from alcoholic matrices were established. The developed SDE‐gas chromatography (GC)‐electron capture detection (ECD), an extraction method, allows the determination of low molecular aldehydes at level lower than 1 µg dm−3. The overall analysis time without derivatization is 35 minutes. The procedure was applied for the determination of aldehydes in real alcoholic beverages (vodkas). The simplicity and cost‐effectiveness of the proposed procedure makes it a good alternative to solid phase microextraction (SPME) and other more labor‐intensive methods.
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