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Ethylene trace detection by quartz enhanced photoacoustic spectroscopy

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6 Author(s)
Liu, K. ; Anhui Institue of Opt. & Fine Mech., Chinese Acad. of Sci., Hefei, China ; Wu, T. ; Gao, X. ; Zhang, W.
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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.

Published in:

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

Date of Conference:

2-4 June 2009