Gas Chromatography

Gas chromatography (GC) is a method of chemical analysis for separating chemicals in a complex sample. This technique uses a flow through narrow tube known as column through which different chemical constituents of a sample in a gas stream (mobile phase; carrier gas) at different rates depending on their various chemical and physical properties and their interaction with a specific column filling called stationary phase. As the sample exit the end of column, they are detected and identified electronically. The function of stationary phase in column is to separate different components, causing each one to exit the column at different times (retention time). Other parameters that can be used to alter the order of time of retention are
1. Carrier flow rate
2. Temperature Read more