UV based pollutant quantification in automotive exhausts

Eamonn Hawe, Gerard Dooly, Colin Fitzpatrick, Elfed Lewis, Paul Chambers

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

This paper describes two optical based sensors for the detection and quantification of vehicle exhaust pollutants. The first sensor consists of a single pass absorption cell. Broadband light from a deuterium/ halogen source was transmitted through the cell from optical fibre and the resulting absorption is detected using a UV spectrometer which was also fibre coupled. The second approach includes an integrating sphere, which has been adapted for use as a multipass absorption cell. An ultraviolet LED was used as an emitter and a photodiode as the detector. Both were mounted directly on the sphere. The single pass absorption cell has been used to monitor nitric oxide, nitrogen dioxide and sulphur dioxide while the integrating sphere has been used to monitor nitrogen dioxide levels. Concentration level's of 10's of parts per million have been measured for each gas and sensor.

Original languageEnglish
Title of host publicationPhotonics in the Automobile II
DOIs
Publication statusPublished - 2006
EventPhotonics in the Automobile II - Strasbourg, France
Duration: 6 Apr 20066 Apr 2006

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume6198
ISSN (Print)0277-786X

Conference

ConferencePhotonics in the Automobile II
Country/TerritoryFrance
CityStrasbourg
Period6/04/066/04/06

Keywords

  • Exhaust Emissions
  • Integrating sphere
  • Optical Fibre
  • Ultra Violet Absorption Spectroscopy

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