Gas chromatography28 April 2020
Gas chromatography (GC) is a very effective technique for analyzing volatile and non-labile molecules in liquids and gases. The gas chromatograph coupled with a mass spectrometer (GC-MS) could be used to identify unknown molecules using a database containing more than 267,000 compounds. This technique could determine the composition of products obtained from biorefining, catalytic processes, pyrolysis. In addition, a special database has been added to quickly determine the composition of any essential oil.
A whole range of injectors and detectors are available to analyze many different samples. various injection including split / splitless, on column, Solid Phase Micro Extraction (SPME) injections could be performed. The unit is also equipped with a gas injector. Specific detectors such as NPD, ECD, FPD can be also installed. The flame ionization detector (FID) is mainly used to quantify catalysis products, food extracts or solvents and the thermal conductivity detector is used to quantify gases ranging from simple gases such as CO2 or methane to more complex gases.