The GB/T 44244-2024 standard specifies the determination method of carbon monoxide and carbon dioxide in hydrogen for proton exchange membrane fuel cell vehicles, which is analyzed by gas chromatograph-helium ionization Detector. The standard describes in detail Gas chromatography, the principle of CG, the required reagents and materials, instrumentation equipment, test procedures and data processing methods. The measurement range includes 0.05 μmol/mol to 10.0 μmol/mol of carbon monoxide and 0.05 μmol/mol to 10.0 μmol/mol of carbon dioxide. The standard specifies the requirements for sample collection, instrument setting, calibrating and quality control to ensure the accuracy and Reliability of the measurement results. This standard is applicable to the composition analysis of hydrogen for proton exchange membrane fuel cell vehicles, and can also be used as a reference for Miscellaneous hydrogen applications.