Optical Methods of Methane Detection.
Mirosław KwaśnyAneta BombalskaPublished in: Sensors (Basel, Switzerland) (2023)
Methane is the most frequently analyzed gas with different concentrations ranging from single ppm or ppb to 100%. There are a wide range of applications for gas sensors including urban uses, industrial uses, rural measurements, and environment monitoring. The most important applications include the measurement of anthropogenic greenhouse gases in the atmosphere and methane leak detection. In this review, we discuss common optical methods used for detecting methane such as non-dispersive infrared (NIR) technology, direct tunable diode spectroscopy (TDLS), cavity ring-down spectroscopy (CRDS), cavity-enhanced absorption spectroscopy (CEAS), lidar techniques, and laser photoacoustic spectroscopy. We also present our own designs of laser methane analyzers for various applications (DIAL, TDLS, NIR).
Keyphrases
- high resolution
- anaerobic digestion
- carbon dioxide
- single molecule
- high speed
- solid state
- photodynamic therapy
- fluorescence imaging
- room temperature
- loop mediated isothermal amplification
- sewage sludge
- mass spectrometry
- drug release
- label free
- risk assessment
- drug delivery
- solid phase extraction
- gas chromatography mass spectrometry
- liquid chromatography
- simultaneous determination
- gas chromatography