期刊
ANALYTICAL LETTERS
卷 39, 期 13, 页码 2629-2642出版社
TAYLOR & FRANCIS INC
DOI: 10.1080/00032710600824763
关键词
carbonyl compounds; extraction techniques; single drop extraction; alcohol
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 C-1-C-6 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 mu g 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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