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

Volume

7

Issue

5

fYear

2007

fDate

5/1/2007 12:00:00 AM

Firstpage

685

Lastpage

691

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);

fLanguage

English

Journal_Title

Sensors Journal, IEEE

Publisher

ieee

ISSN

1530-437X

Type

jour

DOI

10.1109/JSEN.2007.894133

Filename

4154669