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thermogravimetry (TG), gas chromatography/mass spectrometry (GC/MS), or simple pyrolysis. Experimental General In general, reactions were carried out in a dry (all glassware was dried in an oven overnight at 120 °C
extract glycerol in Antarctic krill by ultrasound, to detect and to quantify glycerol by HPTLC after refining by silica gel column chromatography and to verify glycerol structure by gas chromatography–mass spectrometry (GC–MS
is an important science for the understanding of biological systems and the prediction of their behavior, through the profiling of metabolites [ 7 – 11 ]. In this present study, we adopted a metabolomics approach with gas chromatography–mass
characterisation of the aminoacid content and sometimes of the total fatty acids composition with gas chromatography–mass spectrometry (GC–MS) analysis [ 10 – 14 ]. Spectroscopic techniques, like for instance Micro Raman analysis [ 15 ], are also used for
-performance liquid chromatography [HPLC], etc.) or hyphenated with spectroscopic equipment (gas chromatography–mass spectrometry [GC–MS], LC–MS, etc.) offer a viable solution. Since its first discovery in Russia by Tswett in 1900 [ 17 ], chromatography has enjoyed
spectrometry (LC–ESI-MS) [ 9 , 10 ], gas chromatography with electron capture detection (GC–ECD) [ 1 , 11 ], gas chromatography–mass spectrometry (GC–MS) [ 12 ], fluorescence polarization immunoassay (FPIA) [ 13 ], and near-infrared spectroscopy (NIR) [ 14
, according to European Pharmocopoeia [ 39 ]. The chemical constituents of the essential oil were analyzed by capillary gas chromatography–flame ionization detector (GC–FID) and gas chromatography–mass spectrometry (GC–MS). The oil was stored at 4 °C
A multi-analytical approach to studying binding media in oil paintings
Characterisation of differently pre-treated linseed oil by DE-MS, TG and GC/MS
-treated in a number of different ways were analysed by thermogravimetric analysis, TG, direct exposure mass spectrometry, DE-MS, and gas chromatography mass spectrometry, GC/MS. Thermogravimetric analysis (TG) collects changes in mass as a function of
The aim of this study was to assess the suitability of the perirenal fatty tissue for the determination of an organochlorine pesticide. Fatty tissue samples were prepared by the matrix solid phase dispersion (MSPD) method, and pesticide levels were determined by gas chromatography on capillary column using an electron capture detector. Results were confirmed by gas chromatography/mass spectrometry (GC/MS) system. The results showed that the perirenal fatty tissue contained significantly higher levels of hexachlorobenzene (HCB) than the dorsal fatty tissue (P < 0.01). All the levels were below the criteria for maximum residue limits established by Croatia and the EU.
The volatile compounds of acerola wine were isolated by headspace–solid phase microextraction (HS-SPME) and analysed by gas chromatography-flame ionization detector (GC-FID), gas chromatography-mass spectrometry (GC-MS), and gas chromatography-olfactometry (GC-O). The composition of acerola wine included 38 esters, 19 alcohols, 16 acids, 8 terpenes, 5 aldehydes, 5 ketones, 3 furans, and 8 miscellaneous compounds. The odour-active compounds were screened by application of the aroma extract dilution analysis and odour activity values. Nineteen odorants were considered as odour-active volatiles, from which methyl 2-methylbutanoate and 2-ethylhexan-1-ol were the most odour-active compounds.
