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Gas chromatograph for continuous operation with infrared spectrometer

  • US 4,038,055 A
  • Filed: 10/10/1975
  • Issued: 07/26/1977
  • Est. Priority Date: 10/10/1975
  • Status: Expired due to Term
First Claim
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1. An improved gas chromatograph in combination with an absorption spectrum analyzer, the chromatograph comprising upper and lower cojoined chambers, the lower chamber having measured dimensions, the absorption spectrum analyzer having a measured dimension test sample well, the chromatograph lower chamber being dimensioned to fit within the test sample well;

  • the upper chamber being thermally insulated, provided with heating and thermostat means, the chromatograph further comprising a chromatograph column and an injection port, the column being mounted within the upper chamber and connected at its input to the injection port;

    a detector, a sample cell and a plurality of valves, the detector cell and at least two multiport valves being mounted juxtaposed to a heated thermostated metal plate means positioned within the lower chamber;

    the cell, when mounted to the aforesaid plate being positioned transversally of the lower chamber, short tubular connections between, respectively, the column and valves between the detector and valves, and between the cell and valves, whereby, eluted sample materials emitted by the column may be entrained and momentarily retained within the sample cell, the chromatograph lower chamber with the transverse sample cell being positioned within, yet thermally insulated from the analyzer test sample well, while absorption spectrum analysis procedures are completed.

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