Gas chromatograph and method for introducing sample gas in gas chromatograph

A method for introducing a sample gas in a gas chromatograph, the gas chromatograph comprising:

• a sample loop having a predetermined volume, configured to accommodate the sample gas at a first pressure;
• a carrier gas supply unit connected to the sample loop and configured to supply a carrier gas at a second pressure higher than the first pressure;
• a flow rate adjustment chamber connected to the sample loop and the carrier gas supply unit and configured to adjust a flow rate of a gas passing therethrough;
• a column connected to the flow rate adjustment chamber and configured to separate components of the gas that has flowed in from the flow rate adjustment chamber;
• and a detector connected to the column and configured to detect the components that have flowed in from the column, the introduction method comprising:
• a step of accommodating the sample gas in the sample loop;
• a step of lowering a pressure of the flow rate adjustment chamber below the second pressure;
• and
• a step of causing the carrier gas to flow into the sample loop, thereby pushing the sample gas out from the sample loop and causing it to pass through the flow rate adjustment chamber.