Gas separation system

A gas separation system comprising:

• a separation column for separating components contained in sample gas from each other;
• a sample gas supplier that is fluidly connected to an inlet of the separation column and for supplying sample gas to the separation column;
• a detector that is fluidly connected to an outlet of the separation column and detects the components in gas flowing out of the separation column;
• a collection tube filled with an adsorbent having a property of adsorbing a target component in the sample gas under a condition of a first temperature or less and desorbing the adsorbed target component under a condition of a second temperature or more higher than the first temperature;
• a temperature adjuster for adjusting a temperature of the collection tube by cooling and heating the collection tube;
• a collection container for collecting the target component desorbed from the adsorbent of the collection tube;
• and
• a switching mechanism for switching between a first state in which the collection tube is connected to an outlet of the detector so that fluid flowing out of the detector passes through the collection tube and a second state in which the collection tube is connected to the collection container,
• wherein a temperature of the collection tube is set to be at the first temperature or less and the switching mechanism is set to be in the first state and the target component in fluid flowing out of the detector is guided to the collection tube so that the target component is adsorbed on the adsorbent, and the switching mechanism is set to be in the second state and the collection tube in which the target component is adsorbed on the adsorbent is set to be at the second temperature or more so that the target component is collected in the collection container.