Green hydrogen purity is important for its use in fuel cells and other applications. Here are some ways to analyze green hydrogen purity:

 Green hydrogen purity is important for its use in fuel cells and other applications. Here are some ways to analyze green hydrogen purity: 

Mass spectrometry

A sensitive technique that can detect trace impurities like oxygen, nitrogen, carbon dioxide, carbon monoxide, methane, and water vapor. Mass spectrometry can also help producers meet purity standards like ISO 14687. 

Gas chromatography

A technique that uses a gas chromatograph with a thermal conductivity detector or mass spectrometer to separate and analyze hydrogen gas mixture components. 

Fourier Transform Infrared Spectroscopy (FTIR)

A technique that uses FTIR spectrometry to inspect hydrogen gas for the characteristic absorption spectra of impurities. 

Dew point testing

A technique that measures the dew point temperature of the hydrogen gas to determine the amount of water vapor present. 

Using Gas Analysis in Water Electrolysis to Enable Green Hydrogen ...

Green hydrogen is produced by electrolysis, a chemical process that uses an electrical current to separate hydrogen from oxygen in water. The purity of green hydrogen is critical for its successful creation as a clean energy fuel. 

Green hydrogen is gaining interest as a potential fuel and energy source. It could help industries like steel that are difficult to decarbonize.