New Test Method for Standard Test Method for Permanent Gases in Hydrogen Fuel by Gas Chromatography and Pulse Discharge Helium Ionization Detector (GC/PDHID)
1. Scope
This test method covers the determination of hydrogen, nitrogen, oxygen, methane, carbon monoxide and carbon dioxide in the parts per billion mole (nmol/mol) to parts per million mole (umol/mol) range in hydrogen fuel.
Analytical techniques are needed for measuring impurities in hydrogen fuel. Permanent gases are contaminants in hydrogen fuel that must be measured at low parts per billion concentrations. The GC/PDHID system provides a method for detection of these contaminants at the required detection limits.
