Hydrogen contents of fluid inclusion volatiles should not be analysed by mass spectrometer because the ionizer generates hydrogen from water and hydrocarbons.
A proposed mechanism for the generation of H2 from H2O in the electron impact ionizer of Mass Spectrometer. To explain the erroneous H2 analyses of aqueous Fluid Inclusions A discussion and reply on the error of using mass spectrometry to analyse hydrogen in aqueous analytes.