Patent ID: 6617164
Filing Date: 2003-09-09
Classification: C01B,G01N,H01J,Y02A,Y10T

Abstract:
A method for producing a standard gas containing carbon monoxide (CO) and/or hydrogen (H2) for determining the isotope relationships of oxygen and/or hydrogen in a sample during online operation comprising the steps of:decomposing said sample in a heated reactor to produce a sample gas containing one or more of carbon monoxide (CO) and hydrogen (H2); feeding said decomposed sample gas to a mass spectrometer; producing standard gases containing one or more of carbon monoxide (CO) and hydrogen (H2) within said reactor via decomposition of one or more appropriate initial product gases that are fed to said heated reactor; feeding said standard gases to said mass spectrometer; and determining the isotope relationships of oxygen and/or hydrogen in the sample gas by comparison to the isotope composition of oxygen and/or hydrogen in the standard gases.