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6 An Introduction to Headspace Sampling in Gas Chromatography p total = ∑pi p i = p total ∙ x G(i) C G = Equation 14 may be further manipulated to give Equation 15Equation 15 is one of the key relationships in equilibrium headspace sampling. It tells us the

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residual ethanol, acetone and ether contents in 23-valent pneumococcal polysaccharide vaccine were determined by headspace gas chromatography (GC), using water as dissolvent and methanol as internal standard, based on which the developed

Headspace gas chromatography uses headspace gas—from the top or "head" of a sealed container containing a liquid or solid brought to equilibrium —injected directly onto a gas chromatographic column for separation and analysis. In this process, only the most volatile (most readily existing as a vapor) substances make it to the column.

Application of headspace solid-phase microextraction (HS-SPME) coupled with high-resolution gas chromatographic (HRGC) analysis was studied for determining lactones in wines. Six different SPME fibers were tested, and the influence of different factors such as temperature and time of desorption, ionic strength, time of extraction, content of sugar, ethanol, tannins and anthocyanins, and pH and

The potential for hemolysis to impact blood ethanol determinations using headspace gas chromatography of samples diluted with an internal standard was investigated. A sample of non-hemolyzed blood and a matched sample of hemolyzed blood were both analyzed thirty times for ethanol concentration using headspace gas chromatography.

Headspace gas chromatography (HS-GC) has the potential to be used for water determination in pharmaceutical products. In this article, its use for the determination of water in solid samples is explored without the need of dissolution by means of the full evaporation technique (FET).

Dynamic Headspace-Gas Chromatography is primarily used to analyze for the presence of volatile organic compounds in solid samples. While this analysis is more sensitive than static headspace, the technique may be used for qualitative analysis, static headspace method development, or detection of trace levels of impurities, contaminants, or hazardous compounds.

The data show that the headspace gas chromatography method has good precision (relative standard deviation ≤ 1.63%) and accuracy (relative differences ≤ 5.81% compared with the coulometric titration technique).

Headspace gas chromatography (HS-GC) is an effective tool for the quantitative analysis of volatile species in samples with complex matrices , . HS-GC is also able to determine some non-volatile species if they can be quantitatively converted to the related volatile species through some chemical reactions [15] , [16] .

Gas chromatography–olfactometry (GC–O) is a powerful tool for the study of chemical compounds responsible for wine aroma. However, what is quantified by the GC–O process is quite distinct, from both qualitative and quantitative points of view, from the perception experienced during actual wine consumption.

This paper reported a novel headspace gas chromatographic (GC) technique on quantification of acidic and basic species. It is based on an acid–base reaction between the measured species and bicarbonate in an aqueous solution, which generates carbon dioxide in a closed headspace sample vial. By operating at 60 °C, carbon dioxide is completely

Liners were filled with silane treated glass wool (Supelco, USA), base deactivated fused silica wool (Restek, USA) or deactivated glass wool (Restek, USA). Gas chromatographs were controlled as well as data acquisition and processing were accomplished using GCsolution (Version 2.43.00, Shimadzu) and TotalChrom workstation (Version 6.3.2, Perkin Elmer) chromatography data system.

This application note will demonstrate a rapid method for the identification and quantification of furan, in food samples, using gas chromatography, with headspace sampling and mass spectrometry. In addition to method optimization and standard analysis we will analyze a number of food samples for furan.