Ethylene trace detection by quartz enhanced photoacoustic spectroscopy

Author

Liu, K. ; Wu, T. ; Gao, X. ; Zhang, W. ; Fertein, E. ; Chen, W.

Author_Institution

Anhui Institue of Opt. & Fine Mech., Chinese Acad. of Sci., Hefei, China

fYear

2009

fDate

2-4 June 2009

Firstpage

1

Lastpage

2

Abstract

Ethylene (C₂H₄) absorption line intensity at 6172.95 cm^-1 was determined for trace gas detection. C₂H₄ trace concentration measurements were performed using quartz enhanced photoacoustic spectroscopy (QEPAS) with a sensitivity of 1.3 ppmv (1sigma) for tau=1s time constant. The effect of modulation frequency accuracy on QEPAS signal was investigated.

Keywords

chemical analysis; chemical variables measurement; photoacoustic spectroscopy; QEPAS signal; ethylene absorption line intensity; ethylene trace detection; modulation frequency accuracy; quartz enhanced photoacoustic spectroscopy; trace concentration measurements; trace gas detection; Absorption; Frequency modulation; Infrared sensors; Infrared spectra; Laser tuning; Optical sensors; Performance evaluation; Spectroscopy; Time measurement; Vibrations; (110.5125) Photoacoustics; (280.3420) Laser sensors; (300.6340) Spectroscopy, infrared;

fLanguage

English

Publisher

ieee

Conference_Titel

Lasers and Electro-Optics, 2009 and 2009 Conference on Quantum electronics and Laser Science Conference. CLEO/QELS 2009. Conference on

Conference_Location

Baltimore, MD

Print_ISBN

978-1-55752-869-8

Electronic_ISBN

978-1-55752-869-8

Type

conf

Filename

5225624