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Rapid analysis of the essential oil components of dried Zanthoxylum bungeanum Maxim by Fe 2 O 3 ‐magnetic‐microsphere‐assisted microwave distillation and simultaneous headspace single‐drop microextraction followed by GC–MS
Author(s) -
Ye Qing
Publication year - 2013
Publication title -
journal of separation science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.72
H-Index - 102
eISSN - 1615-9314
pISSN - 1615-9306
DOI - 10.1002/jssc.201300205
Subject(s) - distillation , steam distillation , chromatography , solvent , essential oil , extraction (chemistry) , microwave , chemistry , materials science , analytical chemistry (journal) , organic chemistry , physics , quantum mechanics
In this work, microwave distillation assisted by F e 2 O 3 magnetic microspheres (FMMS) and headspace single‐drop microextraction were combined, and developed for determination of essential oil compounds in dried Zanthoxylum bungeanum Maxim ( ZBM ). The FMMS were used as microwave absorption solid medium for dry distillation of dried ZBM . Using the proposed method, isolation, extraction, and concentration of essential oil compounds can be carried out in a single step. The experimental parameters including extraction solvent, solvent volume, microwave power, irradiation time, and the amount of added FMMS , were studied. The optimal analytical conditions were: 2.0 μL decane as the extraction solvent, microwave power of 300 W, irradiation time of 2 min, and the addition of 0.1 g FMMS to ZBM . The method precision was from 4 to 10%. A total of 52 compounds were identified by the proposed method. The conventional steam distillation method was also used for the analysis of essential oil in dried ZBM and only 31 compounds were identified by steam distillation method. It was found that the proposed method is a simple, rapid, reliable, and solvent‐free technique for the determination of volatile compounds in C hinese herbs.