Gas chromatograph for continuous operation with infrared spectrometer
First Claim
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.
0 Assignments
0 Petitions
Accused Products
Abstract
An improved gas chromatograph for "on line" use with absorption spectrum analyzers, particularly, infrared spectrometers. The new chromatograph has been adapted for compatibility with a variety of absorption spectrum analysis instruments from the standpoint of cycling time, dimensions, thermal characteristics and convenience in handling extremely small and highly reactive chemical sample materials.
-
Citations
8 Claims
-
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. - View Dependent Claims (2, 3, 4, 5, 6, 7)
- 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;
-
8. An improved gas chromatograph comprising an upper chamber and a lower chamber, the chambers being cojoined metal enclosures thermally insulated respectively one from the other, 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 heat generating means mounted within the upper chamber, adapted to maintain the column at an elevated temperature;
- a detector, a sample cell and a plurality of multiport valves, the detector cell and at least two multiport valves being mounted juxtaposed to a heated, insulated and thermostated metal plate means, the metal plate means being 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 enclosure with the transverse sample cell mounted therein thermally insulated from the upper chamber heat source, whereby absorption spectrum analysis procedures may be performed upon sample materials entrained within the cell without communicating excessive heat from the chromatograph through the lower chamber enclosure into juxtaposed absorption spectrum analysis equipment.
- a detector, a sample cell and a plurality of multiport valves, the detector cell and at least two multiport valves being mounted juxtaposed to a heated, insulated and thermostated metal plate means, the metal plate means being positioned within the lower chamber;
Specification