Gas Liquid Chromatography 2
Gas Liquid Chromatography 2 : The mobile phase consists of a gas such as helium, nitrogen, hydrogen or argon at pressures of 10 - 50 psi. The stationary phase consists of a packed column or a capillary column which is a small open tube. Each is impregnated or coated with a liquid chosen on its polarity and that of the substances to be separated