ACADSTAFF UGM
| Title | : | Detection of Dissociation and Association Effects of NO2-NO Gases by Laser-based Photoacoustic and Wavelength Modulation Spectroscopy Methods |
| Author | : |
Prof. Dr. Mitrayana, S.Si., M.Si. (1) |
| Date | : | 2009 |
| Keyword | : | Photoacoustic Photoacoustic |
| Abstract | : | Nitrogen dioxide belongs to the family of nitrogen oxides. It occurs naturally in the atmosphere, but it is also produced anthropogenically by e.g. burnig of gaseoline, coal, oil and other fuels as well as in power plants and burning of natural material. Recently, efforts toward the development of simple and reliable devices have been increased with the aim to control air pollution and to detect toxic gases at low levels in the air, in the field of domestic and industrial applications. Laser based trace gas sensors have been used to monitor NOx emission from individual vehicles, as well as variations in air pollution over cities, thereby demonstrating that they can make contributions to manage air quality. In this paper, we present a simple, low modulation sectroscopy. The performance of the violet diode and Quantum Cascade laser-driven for photoacoustic and wavelength modulation system, respectively, was explored and the sensors were applied to monitor of the dissociation and association effects of the NO2 and NO. Thats set-up have a detection limit 20 ppbv at STP for NO2 and 0,8 ppbv for NO. |
| Group of Knowledge | : | Fisika |
| Level | : | Nasional |
| Status | : |
Published
|
| No | Title | Action |
|---|