Development of a Real-time Device for Atmospheric Carbon Monoxide Measurement Combined with Mid-infrared Wavelength Modulation Spectroscopy

Development of a Real-time Device for Atmospheric Carbon Monoxide Measurement Combined with Mid-infrared Wavelength Modulation Spectroscopy

We developed a mid-IR laser absorption spectrometer for ambient carbon monoxide (CO) measurement that uses a 4.69 µm interband cascade laser with wavelength modulation spectroscopy. The CO concentration was measured with a reproducibility of 0.4‰ (1σ) over a 7-h period. Measurements of CO in outside...

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Veröffentlicht in:Chemistry letters 2017-01, Vol.46 (10), p.1501
Hauptverfasser: Hashimoto, Chikara, Tonokura, Kenichi
Format: Artikel
Sprache:eng ; fre ; ger ; jpn
Schlagworte:
Carbon monoxide
Cascade lasers
Colleges & universities
Infrared spectroscopy
Spectrum analysis
Temporal resolution
Wavelength modulation
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Zusammenfassung:We developed a mid-IR laser absorption spectrometer for ambient carbon monoxide (CO) measurement that uses a 4.69 µm interband cascade laser with wavelength modulation spectroscopy. The CO concentration was measured with a reproducibility of 0.4‰ (1σ) over a 7-h period. Measurements of CO in outside air with a temporal resolution of 1 s were conducted successfully on the Kashiwa campus of The University of Tokyo over 4 days without trouble.
ISSN:0366-7022
1348-0715
DOI:10.1246/cl.170605