Abstract

The pressure-broadened spectra of water vapor, carbon dioxide, ethylene, ethanol, and acetaldehyde were recorded with the use of a liquid nitrogen-cooled CO laser-based photoacoustic spectrometer. The results obtained for CO₂ and H₂O gases were compared with those from the Hitran database. The absorption coefficients of ethylene, ethanol, and acetaldehyde on CO laser emission frequencies were determined as well. Finally, the measured spectra were used in a multicomponent analysis of trace gases released by pears (<i>Pyrus communis</i>, cultivar Conference).

Multicomponent trace-gas analysis by three intracavity photoacoustic cells in a CO laser: observation of anaerobic and postanaerobic emission of acetaldehyde and ethanol in cherry tomatoes

Frans G. C. Bijnen, Hanna Zuckermann, Frans J. M. Harren, and Jörg Reuss
Appl. Opt. 37(15) 3345-3353 (1998)

CO₂ Laser Absorption Coefficients for Determining Ambient Levels of O₃, NH₃, and C₂H₄

R. R. Patty, G. M. Russwurm, W. A. McClenny, and D. R. Morgan
Appl. Opt. 13(12) 2850-2854 (1974)

Intracavity CO laser photoacoustic trace gas detection: cyclic CH₄, H₂O and CO₂ emission by cockroaches and scarab beetles

F. G. C. Bijnen, F. J. M. Harren, J. H. P. Hackstein, and J. Reuss
Appl. Opt. 35(27) 5357-5368 (1996)

Measurement of acetaldehyde in exhaled breath using a laser absorption spectrometer

Pratyuma C. Kamat, Chad B. Roller, Khosrow Namjou, James D. Jeffers, Ali Faramarzalian, Rodolfo Salas, and Patrick J. McCann
Appl. Opt. 46(19) 3969-3975 (2007)

Photoacoustic spectroscopy on trace gases with continuously tunable CO₂ laser

Philippe Repond and Markus W. Sigrist
Appl. Opt. 35(21) 4065-4085 (1996)