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Gaseous sample injection apparatus for gas chromatography

  • US 20030172718A1
  • Filed: 03/18/2002
  • Published: 09/18/2003
  • Est. Priority Date: 03/18/2002
  • Status: Abandoned Application
First Claim
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1. a gaseous sample injection apparatus for a GC, comprising, sample storing and injection unit for receiving the desorbed sample gases from the adsorption/desorption unit and carried by a carrier gas and moving the same to the next unit;

  • a first switching valve installed in a connection line for communicating the adsorption/desorption unit with the gaseous sample gas storing and injection unit for selectively opening and closing the flowing path of the connection line;

    a sample loop for receiving a certain amount of sample gas supplied from the sample gas storing and injection unit;

    a carrier gas storing tank for carrying the sample gases from the loop to the sample gas analyzing apparatus and storing and supplying the sample gas carrier gas; and

    a control valve for connecting or disconnecting the sample gas storing and supply apparatus and the sample loop and connecting or disconnecting the carrier gas storing tank and the loop.

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