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Development of an ambient pressure laser-induced fluorescence instrument for nitrogen dioxide
Applied Optics
  • Jeremy Parra, Portland State University
  • Linda Acha George, Portland State University
Document Type
Publication Date
  • Air -- Pollution -- Measurement,
  • Nitrogen dioxide -- Measurement,
  • Atmospheric nitrogen dioxide
Concerns about the health effects of nitrogen dioxide (NO₂) and its role in forming deleterious atmospheric species have made it desirable to have low-cost, sensitive ambient measurements of NO₂. We have developed a continuous-wave laser-diode laser-induced fluorescence (LIF) system for NO₂ that operates at ambient pressure, thereby eliminating the need for an expensive pumping system. The current prototype system has achieved sensitivity several orders of magnitude beyond previous efforts at ambient pressure (limit of detection of 2 ppb, 60 s averaging time). Ambient measurements of NO₂ were made in Portland, Oregon using both the standard NO₂ chemiluminescence method and the LIF instrument and showed good agreement (r2=0.92).

This paper was published in Applied Optics and is made available as an electronic reprint with the permission of OSA. The paper can be found at the following URL on the OSA website: Systematic or multiple reproduction or distribution to multiple locations via electronic or other means is prohibited and is subject to penalties under law.

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Citation Information
J. Parra and L. George, “Development of an ambient pressure laser-induced fluorescence instrument for nitrogen dioxide”, Applied Optics, 48(18), 3355-61, 2009.