To determine the hydrogen content, the sample is burned in oxygen. The combustion water formed is detected by infrared spectroscopy and converted to the hydrogen content of the sample.
For hydrogen trace analyses the carrier gas hot extraction is applied. The method is applicable e.g. for metals, alloys or ceramic materials. The hydrogen content is released by melting the sample with melt-forming additives at temperatures up to 2100°C. The detection is done by a thermal conductivity measuring cell or as water by an infrared measuring cell.
A determination of diffusible hydrogen in metals or alloys is also possible by carrier gas hot extraction.
Hydrogen in the form of water can be determined by Karl Fischer Titration