H – Hydrogen

H – Hydrogen

H – Hydrogen

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

Which concentrations can be determined?

Hydrogen can be analyzed as major, minor and trace component. Determination limits of a few mg/kg are possible depending on the sample matrix.

Which sample matrix can be analyzed?

Almost all solid and liquid matrices can be analyzed.

What are typical tasks?

  • H-determination of organic or organometallic compounds
  • H-trace-determination of ceramics, metals, semiconductors or superconductors
  • Diffusible H-determination in metals or alloys

Which sample quantity is required for the analysis?

H as major component: ≥ 1.0 mg
H as trace component (few mg/kg): approx. 100 mg / matrix dependent

Which methods are available?

  • Infrared spectroscopic detection after combustion
  • Thermal conductivity detection after carrier gas hot extraction
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