Determination of Volatile Compounds from Lavender Flowers Using Passive Sorption on Novel Monolithic Butadiene-Nitrile Rubber and Silicon Carbide Materials by Thermal Desorption Gas Chromatography–Mass Spectrometry

Abstract

A novel composite material based on butadiene-nitrile rubber and silicon carbide (BNR-SiC) was synthesized and used for the first time to determine volatile components of lavender flowers by passive sorption, followed by thermal desorption and gas chromatography−mass spectrometry (GC−MS) identification. This material was demonstrated to capture almost the full range of organic compounds, exhibiting similar sorption/desorption efficiency and better thermal stability compared to Tenax TA. The chromatograms of lavender constituents obtained by passive sorption on Tenax TA and BNR-SiC composite are quite similar. Classes of compounds identified on the chromatograms include mono- and sesquiterpenes, their oxygenated derivatives, terpene alcohols, aromatic hydrocarbons, heterocyclic compounds, phenols, glycerides, linalool, linalyl acetate, eucalyptol, caryophyllene, linalool oxides, 1,3-glyceryl diacetate, and fatty acids, totaling 60 compounds. The approach of passive sorption on a BNR-SiC sorbent followed by thermal desorption GC−MS fingerprint analysis can provide a rough estimation of the compositional diversity and proximity of multi-herbal samples containing various groups of volatile terpene compounds.