A headspace (HS) solid‐phase extraction (SPE) based on polydimethylsiloxane (PDMS)/ionic liquid (IL) sponge was developed for the extraction of lavender essential oil. The PDMS after loading of 1‐butyl‐3‐methylimidazolium tetrachloroferrate ([BMIM]FeCl4) with a high surface area and excellent adsorption capacity was successfully applied in the SPE process. Microwave distillation (MD) coupled with HS‐PDMS/[BMIM]FeCl4 extraction after GC–MS was proposed. Various experimental parameters were studied. The optimal conditions were as follows: optimal IL, [BMIM]FeCl4; volume ratio of IL to ethanol, 1:5; extraction solvent, n‐hexane; microwave power, 600 W; and irradiation time, 12 min. The limits of detection and quantification of the analytic compounds were in the ranges 4.00–16.32 and 10.00–40.00 ng, respectively. The intra‐day and inter‐day precisions were in the ranges 0.37–1.94% and 1.20–2.45%, respectively. Under the optimized conditions, 13 samples of 3 lavender varieties were analyzed, and 40 compounds were identified. Lavender varieties were distinguished using principal component analysis. The results showed that MD‐HS‐PDMS/IL‐GC–MS is a novel, simple, and sensitive method for the determination of essential oil in complex plant samples.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.