Fluid analysis by gas chromatography employing multiple carrier gases and multiple columns
Abstract
Abstract A FLUID IS ANALYZED BY INTRODUCING MEASURED SAMPLES INTO TWO IDENTICAL CHROMATOGRAPHIC COLUMNS IN EACH OF WHICH A DIFFERENT CARRIER GAS IS USED. ONE CARRIER GAS HAS A RELATIVELY HIGH THERMAL CONDUCTIVITY, E.G. HYDROGEN OR HELIUM, AND THE OTHER HAS A RELATIVELY LOW THERMAL CONDUCTIVITY, E.. NITROGEN. THE FLOW OF CARRIER GAS THROUGH EACH COLUMN IS CONTINUED TO SUCCESIVELY ELUTE THE CONSTITUTENTS OF THE SAMPLES AND THE BINARY MIXTURE OF CARRIER GAS AND SAMPLE CONSTITUENTS DISCHARGED FROM EACH COLUMN IS PASSED TO SEPARATED DETECTION ELEMENTS, G.G. THERMAL DETECTION ELEMENTS, EACH RESPONSIVE TO CHANGES IN THE GAS COMPOSITION PASSED THERETHROUGH. THE RESPONSES FROM THE SEPARATE DETECTION ELEMENTS ARE COMBINED TO PROVIDE A COMPOSITE REPRESENTATION OF THE COMPONENTS OF THE SAMPLES.
Inventors
- 👤 Fay L Boys
Bibliographic Details
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