| abstract |
(57) Summary A continuous flow method for determining the quantitative isotopic composition of hydrogen contained in a compound is disclosed, along with an apparatus for carrying out the method. In this method, a sample to be analyzed is introduced into a hydrogen-free carrier gas stream, which is then passed through a heated catalytic reactor containing a chromium-based catalyst. . The sample is pyrolyzed in a catalytic reactor to form molecular hydrogen, which is then mass analyzed. Preferably, a gas chromatograph is arranged in front of the catalytic reactor so that one or more components or mixtures can be analyzed separately. |