How to analyze gas chromatography?
At a high level, depending on the type of sample and the desired outcome, gas chromatography analysis can use several different means of sample introduction, such as static headspace analysis, thermal desorption, and direct injection, as well as different types of detectors, such as flame ionization (FID), electron capture (ECD), and—of course—mass spectrometry.
What does gas chromatography tell you?
Gas chromatography. Gas chromatography, 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.
What are the disadvantages for gas chromatography?
The major disadvantage of GC is that only volatile and thermally stable compounds can be separated using gas chromatography.
What is the principle behind the gas chromatography?
What is gas chromatography? Gas chromatography differs from other forms of chromatography in that the mobile phase is a gas and the components are separated as vapors. It is thus used to separate and detect small molecular weight compounds in the gas phase. The sample is either a gas or a liquid that is vaporized in the injection port.
What are the uses of gas chromatography?
Chromatography has numerous applications in biological and chemical fields. It is widely used in biochemical research for the separation and identification of chemical compounds of biological origin. In the petroleum industry the technique is employed to analyze complex mixtures of hydrocarbons.
What are examples of gas chromatography?
Gas chromatography. For example, by the use of only 0.1 cubic centimetre (0.003 ounce) of blood, it is possible to determine the percentages of dissolved oxygen, nitrogen, carbon dioxide, and carbon monoxide. Gas chromatography is also useful in the analysis of air pollutants, alcohol in blood, essential oils, and food products.