Sensors 2010, 10(10), 9359-9368; doi:10.3390/s101009359
Article

A Sulfur Hexafluoride Sensor Using Quantum Cascade and CO2 Laser-Based Photoacoustic Spectroscopy

1email, 1,* email, 1email, 1email, 1email, 2email and 1email
Received: 30 August 2010; in revised form: 29 September 2010 / Accepted: 3 October 2010 / Published: 18 October 2010
(This article belongs to the Special Issue Gas Sensors - 2010)
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Abstract: The increase in greenhouse gas emissions is a serious environmental problem and has stimulated the scientific community to pay attention to the need for detection and monitoring of gases released into the atmosphere. In this regard, the development of sensitive and selective gas sensors has been the subject of several research programs. An important greenhouse gas is sulphur hexafluoride, an almost non-reactive gas widely employed in industrial processes worldwide. Indeed it is estimated that it has a radiative forcing of 0.52 W/m2. This work compares two photoacoustic spectrometers, one coupled to a CO2 laser and another one coupled to a Quantum Cascade (QC) laser, for the detection of SF6. The laser photoacoustic spectrometers described in this work have been developed for gas detection at small concentrations. Detection limits of 20 ppbv for CO2 laser and 50 ppbv for quantum cascade laser were obtained.
Keywords: sulfur hexafluoride; photoacoustic spectroscopy; sensors
PDF Full-text Download PDF Full-Text [223 KB, uploaded 21 June 2014 03:12 CEST]

Export to BibTeX |
EndNote


MDPI and ACS Style

Rocha, M.; Sthel, M.; Lima, G.; Silva, M.; Schramm, D.; Miklós, A.; Vargas, H. A Sulfur Hexafluoride Sensor Using Quantum Cascade and CO2 Laser-Based Photoacoustic Spectroscopy. Sensors 2010, 10, 9359-9368.

AMA Style

Rocha M, Sthel M, Lima G, Silva M, Schramm D, Miklós A, Vargas H. A Sulfur Hexafluoride Sensor Using Quantum Cascade and CO2 Laser-Based Photoacoustic Spectroscopy. Sensors. 2010; 10(10):9359-9368.

Chicago/Turabian Style

Rocha, Mila; Sthel, Marcelo; Lima, Guilherme; Silva, Marcelo da; Schramm, Delson; Miklós, András; Vargas, Helion. 2010. "A Sulfur Hexafluoride Sensor Using Quantum Cascade and CO2 Laser-Based Photoacoustic Spectroscopy." Sensors 10, no. 10: 9359-9368.

Sensors EISSN 1424-8220 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert