Application to methane gas detection
Photoacoustic spectrometry - Application to gas analysis

Methane detection has always been an interesting subject. In the past, its detection was necessary, in mines, to prevent firedamp. The detection of CH ₄ has been the subject of numerous patent applications. Today, almost all commercial methane detectors are based on flame ionization. The technique is relatively simple: during normal combustion, a stable proportion of CH ₄ molecules (around 0.0002%) temporarily ionize into the carbon ion C ⁺ and electrons e ^– . The flame produces the energy for this ionization. This phenomenon has a very short lifetime, and the charged components quickly...