This article studies the migration of MOAH from hot melt adhesives used in multilayer laminates into food simulants. First, initial concentration a group compounds selected as markers several was determined by headspace solid phase microextraction coupled to gas chromatography mass spectrometry (HS-SPME-GC-MS), using previously optimised method. Then, fraction and studied. The analysed with fla...

The definition of the volatile organic compounds profile plants is an important tool for food quality and authenticity assessment. aim this study was to quantitative determination three Artemisia campestris L. subsp. glutinosa, Lavandula angustifolia Mill., Zingiber officinale rosch. using Gas Chromatography-Mass Spectrometry (SPME/GC-MS). Thirty-three were determined in application SPME/GC-MS....

BACKGROUND Traditionally, the essential oil of aromatic herbs is obtained using hydrodistillation (HD). Because the emitted volatile fraction plays a fundamental role in a plant's life, various novel techniques have been developed for its extraction from plants. Among these, headspace solid phase microextraction (HS-SPME) can be used to obtain a rapid fingerprint of a plant's headspace. Daucus ...

In this study, a procedure was developed to determine short-chain alkane monocarboxylic acids (SCMAs) in aqueous samples using headspace solid-phase microextraction (HS-SPME) followed by gas chromatography (GC) coupled with mass spectrometry (MS). A Stabilwax-DA capillary column (30 m × 0.32-mm inner diameter, 0.50-μm film thickness) was used for GC separation and a 60-μm poly(ethylene glycol) ...

Hypericum Perforatum L., commonly known as St. John’s wort, is one of the best-known medicinal herbs. wort infused oils are mostly used externally, but can be taken orally for stomach ulcers, a food supplement. Therefore, it important to develop methods that allow rapid and reliable determination β-caryophyllene, which main active components wort. In this work, two gas chromatographic technique...

In this study, the application of eucalyptus essential oil/vapour as beverages preservative is reported. The chemical composition of eucalyptus oil was determined by gas chromatography-mass spectrometry (GC-MS) and solid phase microextraction GC-MS (SPME/GC-MS) analyses. GC-MS revealed that the major constituents were 1,8-cineole (80.5%), limonene (6.5%), α-pinene (5%), and γ-terpinene (2.9%) w...

BACKGROUND Volatile organic compounds (VOCs) can be intermediates of metabolic pathways and their levels in biological samples may provide a better understanding about diseases in addition to potential methods for diagnosis. Headspace analysis of VOCs in urine samples using solid phase micro extraction (SPME) coupled to gas chromatography - mass spectrometry (GC-MS) is one of the most used tech...

The application of portable chromatography–mass spectrometer (GC–MS) is restrained by its detection limits without the development proper sample pre-concentration methods. primary focus this paper to introduce a practical field measurement methodology for analysis volatile organic compounds (VOCs) in soil vapour and groundwater using gas (GC–MS)system situ assessment intrusion from VOC contamin...

Abstract Phoebe zhennan and bournei are favored for their fine-grain, insect resistance, special fragrance, not easily cracked deformed, which had been widely used in furniture construction. Wood authenticity regarding different varieties geographical origins is increasingly becoming a concern consumers. Due to the difference wood quality characteristics economic value of genus species from ori...

A new method is described for the qualitative and quantitative analysis of cyanide, a very short-acting and powerful toxic agent, in human whole blood. It involves the conversion of cyanide into hydrogen cyanide and its subsequent headspace solid-phase microextraction (HS-SPME) and detection by gas chromatography/mass spectrometry (GC/MS) in selected ion monitoring (SIM) mode. Optimizing the co...