2 Headspace sampling for gas chromatographic (GC) analysis has many advantages, the most important of which is the elimination of many interferences from the sample matrix. In addition to the standard methods for headspace sampling, the technique of solid-phase microextraction (SPME) has found wide acceptance because it is simple and inexpensive. More recently, single-drop microextraction (SDME...

Static headspace analysis of Gabon Estuary okoume (Aucoumea klaineana Pierre) oleoresins indicated that nine products represented the major part (>96%) of the volatile compounds: six monoterpenes (α-pinene, β-pinene, limonene, α-phellandrene, β-phellandrene, 3-carene), one monoterpenic alcohol (α-terpineol) and two other derivatives (p-cymene, eucalyptol). The relative amount of each product ap...

The technique of static headspace gas chromatography has great acceptance in the forensic field, especially for the determination of ethanol in biological samples (Macchia et al., 1995; Tagliaro et al., 1992), so most forensic laboratories in the world have this equipment and perform this analysis on a routine basis, but in many of these laboratories, equipment is exclusively employed to determ...

The headspace volatile components of roots, stems, leaves, and flowers of Echinacea angustifolia,E. pallida, and E. purpurea were analyzed by capillary gas chromatography/mass spectrometry (GC/MS). Over 70 compounds were identified in the samples. All plant tissues, irrespective of the species, contain acetaldehyde, dimethyl sulfide, camphene, hexanal, beta-pinene, and limonene. The main headsp...

The volatile constituents obtained from Juniperus communis berries by the application of different methods, Hydro distillation (HD), Super Critical Fluid Extraction (SFE) and Headspace (HSE) static technique were examined as regards their qualitative and quantitative composition. Significant differences were noticed among the percentages of the main components of the extracts: the monoterpene h...