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Virtual Journal for Biomedical Optics

Virtual Journal for Biomedical Optics

| EXPLORING THE INTERFACE OF LIGHT AND BIOMEDICINE

  • Editor: Gregory W. Faris
  • Vol. 2, Iss. 8 — Aug. 10, 2007

Spectroscopic investigation of methylated amines by a cavity-ringdown-based spectrometer

Dilyan Marinov, Julien M. Rey, Michel G. Müller, and Markus W. Sigrist  »View Author Affiliations


Applied Optics, Vol. 46, Issue 19, pp. 3981-3986 (2007)
http://dx.doi.org/10.1364/AO.46.003981


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Abstract

High-resolution absorption spectra of gas-phase monomethylamine (MMA, CH 3 NH 2 ) and dimethylamine [DMA, ( CH 3 ) 2 NH] in the region of the first overtone of the NH stretch vibration are reported. Measurements were performed with a near-infrared laser spectrometer based on the cavity-ringdown (CRD) detection technique. The minimum detectable absorption coefficient for the CRD detection setup is α min = 1.55 × 10 8 cm 1 (for SNR = 1). This corresponds to detection limits of 350 parts in 10 9 (ppb) for MMA and 1.6 parts in 10 6 (ppm) for DMA in synthetic gas mixtures under interference-free conditions, or 10 ppm and 60 ppm for MMA and DMA, respectively, in the case of gas mixtures such as exhaled human breath containing H 2 O , CO 2 , and other absorbing gases in this range.

© 2007 Optical Society of America

OCIS Codes
(140.3600) Lasers and laser optics : Lasers, tunable
(170.4580) Medical optics and biotechnology : Optical diagnostics for medicine
(300.6360) Spectroscopy : Spectroscopy, laser

ToC Category:
Absorption and Cavity-Based Techniques

History
Original Manuscript: October 12, 2006
Manuscript Accepted: December 13, 2006
Published: June 12, 2007

Virtual Issues
Vol. 2, Iss. 8 Virtual Journal for Biomedical Optics

Citation
Dilyan Marinov, Julien M. Rey, Michel G. Müller, and Markus W. Sigrist, "Spectroscopic investigation of methylated amines by a cavity-ringdown-based spectrometer," Appl. Opt. 46, 3981-3986 (2007)
http://www.opticsinfobase.org/vjbo/abstract.cfm?URI=ao-46-19-3981

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