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Search: id:"swepub:oai:lup.lub.lu.se:c007a76b-89d3-4087-a777-35e94b92b9ee" > (2005)

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  • Somesfalean, Gabriel, et al. (author)
  • Long-path monitoring of NO2 with a 635 nm diode laser using frequency-modulation spectroscopy
  • 2005
  • In: Applied Optics. - 2155-3165. ; 44:24, s. 5148-5151
  • Journal article (peer-reviewed)abstract
    • In situ monitoring of traffic-generated nitrogen dioxide (NO2) emissions using long-path absorption spectroscopy is reported. High-sensitivity detection of NO2 is achieved by employing two-tone frequencymodulation spectroscopy at a visible absorption band using a tunable high-power diode laser operated around 635 nm. A real-time absorption spectrometer is accomplished by repetitively applying a rectangular current pulse to the diode-laser operating current, allowing detection of isolated NO2 absorption lines. A detection limit of 10 mu g/m(3) for NO2 at atmospheric pressure using a 160 m absorption path is demonstrated. Continuous monitoring of NO2 over a road intersection at peak traffic is performed.
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Type of publication
journal article (1)
Type of content
peer-reviewed (1)
Author/Editor
Gustafsson, U (1)
Svanberg, Sune (1)
Somesfalean, Gabriel (1)
Alnis, J (1)
Edner, Hans (1)
University
Lund University (1)
Language
English (1)
Research subject (UKÄ/SCB)
Natural sciences (1)
Year
2005 (1)Undo refine

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