Optical gas sensing: a review

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 ga...

Full description

Saved in:
Bibliographic Details
Published inMeasurement science & technology Vol. 24; no. 1; pp. 12004 - 12062
Main Authors Hodgkinson, Jane, Tatam, Ralph P
Format Journal Article
LanguageEnglish
Published IOP Publishing 01.01.2013
Subjects
fibre optic instruments
IR spectrometers
laser spectroscopy
optical and dielectric properties of gases
sensors
UV/vis spectrometers
Online AccessGet full text

Cover

More Information
Summary: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.
ISSN:0957-0233
1361-6501
DOI:10.1088/0957-0233/24/1/012004