Title :
Low Concentration Monitoring of Exhaust Gases Using a UV-Based Optical Sensor
Author :
Dooly, Gerard ; Lewis, Elfed ; Fitzpatrick, Colin ; Chambers, Paul
Author_Institution :
Electron. & Comput. Eng. Dept., Univ. of Limerick, Castletroy
fDate :
5/1/2007 12:00:00 AM
Abstract :
The development of an ultra-violet (UV) differential optical absorption spectroscopy (DOAS) fibre-optic sensor for the monitoring of vehicle exhaust gases is described in this paper. Experimental results describing the operation of this sensor with NO2, SO2 , and NO are shown. These experimental results are compared with existing published spectroscopic absorption measurements. It is shown that the minimum detectable concentration of NO2 is 1 ppm, SO 2 is 1 ppm, and NO is 26 ppm. The sensor was found to have a low susceptibility to interference between the detection of these gases
Keywords :
air pollution measurement; fibre optic sensors; gas sensors; monitoring; nitrogen compounds; sulphur compounds; ultraviolet detectors; ultraviolet spectra; NO; NO2; SO2; UV-based optical sensor; fibre-optic sensor; low concentration monitoring; spectroscopic absorption measurements; ultraviolet differential optical absorption spectroscopy; vehicle exhaust gases; Chemical sensors; Electromagnetic wave absorption; Gas detectors; Gases; Monitoring; Optical fiber sensors; Optical sensors; Pollution; Spectroscopy; Vehicles; differential optical absorption spectroscopy (DOAS); exhaust gas sensing; pollution monitoring; spectroscopy; ultra-violet (UV);
Journal_Title :
Sensors Journal, IEEE
DOI :
10.1109/JSEN.2007.894133
