This article needs additional citations for verification. Please help improve this article by adding citations to reliable sources. Unsourced material may be challenged and removed. Find sources: "Gas chromatography" – news · newspapers · books · scholar · JSTOR(November 2020) (Learn how and when to remove this message)
Gas chromatography
A gas chromatograph with a headspace sampler
Acronym
GC
Classification
Chromatography
Analytes
Organic
Inorganic
Must be volatile
Other techniques
Related
Thin layer chromatography
High performance liquid chromatography
Hyphenated
Gas chromatography-mass spectrometry
Gas chromatography (GC) is a common type of chromatography used in analytical chemistry for separating and analyzing compounds that can be vaporized without decomposition. Typical uses of GC include testing the purity of a particular substance, or separating the different components of a mixture.[1] In preparative chromatography, GC can be used to prepare pure compounds from a mixture.[2][3]
Gas chromatography is also sometimes known as vapor-phase chromatography (VPC), or gas–liquid partition chromatography (GLPC). These alternative names, as well as their respective abbreviations, are frequently used in scientific literature.[2]
Gas chromatography is the process of separating compounds in a mixture by injecting a gaseous or liquid sample into a mobile phase, typically called the carrier gas, and passing the gas through a stationary phase. The mobile phase is usually an inert gas or an unreactive gas such as helium, argon, nitrogen or hydrogen.[1] The stationary phase can be solid or liquid, although most GC systems today use a polymeric liquid stationary phase.[4] The stationary phase is contained inside of a separation column. Today, most GC columns are fused silica capillaries with an inner diameter of 100–320 micrometres (0.0039–0.0126 in) and a length of 5–60 metres (16–197 ft). The GC column is located inside an oven where the temperature of the gas can be controlled and the effluent coming off the column is monitored by a suitable detector.[1]
^ abcHarvey, David (2000). Modern analytical chemistry. Boston: McGraw-Hill. ISBN 0-07-237547-7. OCLC 41070677.
^ abPavia, L.; Gary M. Lampman; George S. Kritz; Randall G. Engel (2006). Introduction to Organic Laboratory Techniques (4th ed.). Thomson Brooks/Cole. pp. 797–817. ISBN 978-0-495-28069-9.
^"Gas Chromatography". Linde AG. Archived from the original on 3 March 2012. Retrieved 11 March 2012.
^Harris, Daniel C.; Charles A. Lucy (2016). Quantitative chemical analysis (Ninth ed.). New York: W.H. Freeman & Company. ISBN 978-1-4641-3538-5. OCLC 915084423.
and 22 Related for: Gas chromatography information
Gaschromatography (GC) is a common type of chromatography used in analytical chemistry for separating and analyzing compounds that can be vaporized without...
analysis, chromatography is a laboratory technique for the separation of a mixture into its components. The mixture is dissolved in a fluid solvent (gas or liquid)...
use a direct insertion probe, and complex mixtures use gaschromatography or liquid chromatography. In this method the sample is first inserted into a heated...
the actual molecule(s) of interest. Similarly to gaschromatography MS (GC-MS), liquid chromatography-mass spectrometry (LC/MS or LC-MS) separates compounds...
but are often coupled with mass spectrometry, gaschromatography or high-performance liquid chromatography in order to achieve a multi-dimensional separation...
low temperatures. Helium is used as the carrier medium in gaschromatography, as a filler gas for thermometers, and in devices for measuring radiation...
instrument that measures analytes in a gas stream. It is frequently used as a detector in gaschromatography. The measurement of ion per unit time make...
sample of mixed gases. The separated gases can be detected multiple ways, but one of the most powerful detection methods for gaschromatography is mass spectrometry...
Hiroshima in 1945. The use of a mass spectrometer as the detector in gaschromatography was developed during the 1950s by Roland Gohlke and Fred McLafferty...
Inverse gaschromatography is a physical characterization analytical technique that is used in the analysis of the surfaces of solids. Inverse gas chromatography...
sorted by using chromatography. The third and final phase was analyzed using an online micro GC unit and those pyrolysates were gases. Two different types...
degradation due to recycling. Column chromatography can be done using gravity to move the solvent, or using compressed gas to push the solvent through the...
liquid and gas properties converge, supercritical fluid chromatography is sometimes called convergence chromatography. The idea of liquid and gas properties...
product may be less polar, thus more volatile, allowing analysis by gaschromatography. Bulky, nonpolar silyl groups are often used for this purpose. Chiral...
used as a protective gas in growing silicon and germanium crystals, in titanium and zirconium production, and in gaschromatography, because it is inert...
Headspace gaschromatography uses headspace gas—from the top or "head" of a sealed container containing a liquid or solid brought to equilibrium—injected...
true-positive, a false-negative, a false-positive, and a true-negative. Gaschromatography-mass spectrometry (GC-MS) is a widely used analytical technique for...
microextraction and gaschromatography (Analisa senyawa volatil kopi luwak dengan menggunakan mikroekstrasi fase padat dan kromatolgi gas)". Pelita Perkebunan...
Paper chromatography is an analytical method used to separate coloured chemicals or substances. It is now primarily used as a teaching tool, having been...
Global Information
