Measurement Science and Technology· 2012Q2· Review
Optical gas sensing: a review
- 1,704citations
- Q2SCImago
- 2012year
Short summary
This review covers optical gas detection techniques, including NDIR, spectrophotometry, TDLS, and photoacoustic spectroscopy, highlighting recent advancements in supporting components and performance limitations.
AI-generated from the title and abstract; the full text is not read.
Key points
- Optical gas sensing utilizes characteristic absorption spectra for detection.
- Key techniques reviewed include NDIR, spectrophotometry, TDLS, and photoacoustic spectroscopy.
- Recent advancements in light sources and gas cells are discussed.
- A performance comparison of techniques over the last decade is presented.
AI-generated from the title and abstract; the full text is not read.
Abstract
The detection and measurement of gas concentrations using the characteristic optical absorption of the gas species is important for both understanding and monitoring a variety of phenomena from industrial processes to environmental change. This study reviews the field, covering several individual gas detection techniques including non-dispersive infrared, spectrophotometry, tunable diode laser spectroscopy and photoacoustic spectroscopy. We present the basis for each technique, recent developments in methods and performance limitations. The technology available to support this field, in terms of key components such as light sources and gas cells, has advanced rapidly in recent years and we discuss these new developments. Finally, we present a performance comparison of different techniques, taking data reported over the preceding decade, and draw conclusions from this benchmarking.
The authors' abstract, as published at the source. Measurement Science and Technology, 2012 · DOI ↗
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Field: Spectroscopy
SpectroscopyChemistry