Photoacoustic detection and monitoring of pollutant gases from urban public transport

Nowadays, air pollution is presented as a serious threat to the planet. The concentration of gases from anthropogenic activities, such as transport, cause consequences ranging from local to global scale, affecting the climate, the environment and the human health. It is necessary to detect and monit...

Full description

Saved in:
Bibliographic Details
Published inJournal of physics. Conference series Vol. 214; no. 1; p. 012040
Main Authors Teodoro, C G, Schramm, D U S, Sthel, M S, Lima, G R, Rocha, M V, Tavares, J R, Vargas, H
Format Journal Article
LanguageEnglish
Published Bristol IOP Publishing 01.03.2010
Subjects
Carbon dioxide
Carbon dioxide lasers
Exhaust gases
Gas sampling
Infrared analysis
Photoacoustic spectroscopy
Photothermography
Physics
Pollutants
Pollution monitoring
Pollution sources
Public transportation
Spectrum analysis
Online AccessGet full text

Cover

More Information
Summary:Nowadays, air pollution is presented as a serious threat to the planet. The concentration of gases from anthropogenic activities, such as transport, cause consequences ranging from local to global scale, affecting the climate, the environment and the human health. It is necessary to detect and monitor of a large number of gas species emitted by these sources of pollutants. The photothermal techniques, specially photoacoustic spectroscopy, allow the detection of many gaseous species. In this work, it is presented a new detection limit for a photoacoustic spectrometer composed of a CO2 Laser and a Photoacoustic Resonant Cell. Analyses of many gas samples collected in the exhaust of urban buses in the city were performed. Ethylene was detected with the help of the CO2 Laser photoacoustic spectroscopy and concentrations of CO, CO2 and NO were obtained through a commercial infrared photoacoustic analyzer called URAS.
ISSN:1742-6596
1742-6588
1742-6596
DOI:10.1088/1742-6596/214/1/012040