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Rapid Extraction of Volatile Compounds Using a New Simultaneous Microwave Distillation: Solvent Extraction Device 总被引:2,自引:0,他引:2
M. A. Ferhat N. Tigrine-Kordjani S. Chemat B. Y. Meklati F. Chemat 《Chromatographia》2007,65(3-4):217-222
Simultaneous distillation–extraction (SDE) is routinely used by analysts for sample preparation prior to gas chromatography
analysis. In this work, a new process design and operation for microwave assisted simultaneous distillation–solvent extraction
(MW-SDE) of volatile compounds was developed. Using the proposed method, isolation, extraction and concentration of volatile
compounds can be carried out in a single step. To demonstrate its feasibility, MW-SDE was compared with the conventional technique,
SDE, for gas chromatography-mass spectrometry (GC-MS) analysis of volatile compounds in a fresh aromatic herb, Zygophyllum album L., a wild salty desert herb belonging to the family Zygophyllaceae. SDE method required a long time (3 h) to isolate the
volatile compounds, and large amounts of organic solvent (200 mL of hexane) for further extraction, while MW-SDE needed shorter
time (only 30 min) to prepare the sample, and less amount of organic solvent (10 mL of hexane). These results show that MW-SDE–GC-MS
is a simple, rapid and solvent-less method for the determination of volatile compounds from aromatic plants. 相似文献