Patent ID: 6062065
Filing Date: 2000-05-16
Classification: G01N

Abstract:
A method of introducing into a capillary column of a gas chromatograph a sample, which contains target components to be analyzed and a solvent and is injected into a vaporization chamber at the inlet of said column, by causing a carrier gas to flow into said vaporization chamber and to carry said injected sample into said column, said method comprising the steps of:temporarily increasing the pressure of said carrier gas flowing into said vaporization chamber as said sample is injected;causing said carrier gas to introduce said sample through a tubular insert which is inserted into said vaporization chamber and has an internal volume so determined that the retention time of said carrier gas through said insert is less than 4 seconds; andcontrolling the temperature inside said vaporization chamber to remain within a specified range above the boiling point of said solvent as said sample is injected into said vaporization chamber and thereafter raising the temperature inside said vaporization chamber.