Real-time isotopic methane detection using mid-infrared spectroscopy. Academic Article uri icon


  • A real-time, nondestructive mid-infrared (mid-IR) platform was proposed for isotopic methane detection. The measurement system consisted of a tunable mid-IR laser, a miniaturized gas chamber, and a mid-IR signal receiver. The isotope ratio of the 12CH4/13CH4 was identified by measuring the mid-IR spectrum at =3.2-3.5m.In-situ12CH4/13CH4 monitoring was then achieved by tracing the characteristic mid-IR absorption peaks assigned to the 12CH4 at =3.328m and 13CH4 at =3.340m. The real-time methane isotope analysis can be applied to environmental monitoring and petroleum industries.

published proceedings

  • Appl Opt

author list (cited authors)

  • Yang, J., Zhou, J., & Lin, P. T.

complete list of authors

  • Yang, Jinghao||Zhou, Junchao||Lin, Pao Tai

publication date

  • December 2020