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US 4,536,199 AGranted
Gas chromatograph for reseparating a sampel into pure components
AssigneeMobil Oil Corporation
InventorMichael B. Toon
Life of this patent
Estimating the term…
Abstract
A gas chromatograph includes valves for connecting the trapped components back to the column so that the trapped components can be reseparated to provide high purity of the trapped components.
Claims10
A gas chromatograph for separating the components of a sample comprising:
- a chromatographic column for separating said sample into its components;
- a detector for measuring the properties of said components;
- means for holding said sample and connecting it to said detector;
- a plurality of traps for trapping the components of said sample;
- a first valve selectively connecting said means for holding said sample to an external source of sample or to a component trapped in one of said traps and;
- a second valve for selectively connecting said traps to supply a component trapped in one of said traps to said detector or to supply a component passing through said detector to one of said traps so that the trapped components can be reseparated.
3 more elements
The method of operating a gas chromatograph comprising:
- separating a sample into its components in a chromatographic column;
- detecting the thermal conductivity of the separated components;
- operating valves which connect each of said components to a different trap in response to indicated peaks in said thermal conductivity;
- operating a valve which selectively connects a means for holding said sample to an external source of sample or to a component trapped in one of said traps;
- thereafter connecting said means for holding said sample loop to said detector:
- and
- repeating the steps of separating, detecting and operating valves which connect each of said components to a different trap.
4 more elements
Dependencies are inferred from the claim text.