| 摘要 |
An apparatus and method for measuring the isotope ratio of samples containing carbon and nitrogen compounds. The method includes steps of (a) adding a sample containing carbon or nitrogen compounds to a sample introduction component in which a mixture of analytes is separated into specific molecules, and wherein said sample introduction comprises means for continuous sample introduction into a chemical reaction interface (CRI); wherein said CRI converts intact carbon and nitrogen analytes into new element-specific compounds in an environment comprising fluorine to resolve said compounds; and (b) calculating the isotope ratio of the compounds of said sample with mass spectrometer capable of making precise isotopic measurements. The reactant gas in the reaction chamber is a fluorine gas which allows for better resolution and calculation of the isotope ratio of carbon and nitrogen compounds, with hydrogen, sulfur and oxygen-containing compounds. |
