Study on the Difference of Measuring Results of the Diffusible Hydrogen by Carrier Gas Thermal Extraction and Gas Chromatography

A comparative experiment of diffusive hydrogen measurement by carrier gas thermal extraction and gas chromatography was carried out. It was found that the diffusive hydrogen measurement results by carrier gas thermal extraction were lower than those by gas chromatography, then the weighing steps and hydrogen collecting mode were determined to be the main reasons for the difference.