Abstract
A compact, fast-response instrument for measuring atmospheric NO 2 by single-wavelength excitation laser-induced fluorescence (LIF) technique was improved. A single-pass alignment of a more powerful, pulsed laser was utilized to realize the pptv (=10-12 by volume) of the limit of detection (LOD). As a result, the LOD reached 1.8pptv for 1-min averaging (S/N=1). To determine the instrumental zero accurately, interference by particles was cancelled out utilizing an NO2 scrubber tube coated with a mixture of titanium dioxide (TiO2) and hydroxyapatite. Consequently, it was confirmed that the combination of the improved single-wavelength LIF instrument with the scrubber was reasonable for measuring atmospheric NO2.
| Original language | English |
|---|---|
| Pages (from-to) | 4847-4851 |
| Number of pages | 5 |
| Journal | Atmospheric Environment |
| Volume | 37 |
| Issue number | 34 |
| DOIs | |
| Publication status | Published - 2003 Nov |
| Externally published | Yes |
Keywords
- Diffusion scrubber
- Diode-pumped solid-state laser
- Interference by particles
- Single-pass alignment
- Single-wavelength excitation LIF
ASJC Scopus subject areas
- Environmental Science(all)
- Atmospheric Science
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Cite this
Matsumoto, J., & Kajii, Y. (2003). Improved analyzer for nitrogen dioxide by laser-induced fluorescence technique. Atmospheric Environment, 37(34), 4847-4851. https://doi.org/10.1016/j.atmosenv.2003.08.023