HONO measurement by differential photolysis
Nitrous acid (HONO) has been quantitatively measured in situ by differential photolysis at 385 and 395 nm, and subsequent detection as nitric oxide (NO) by the chemiluminescence reaction with ozone (O<sub>3</sub>). The technique has been evaluated by Fourier transform infrared (FT-IR) sp...
| Main Authors: | , , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Copernicus Publications
2016-06-01
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| Series: | Atmospheric Measurement Techniques |
| Online Access: | http://www.atmos-meas-tech.net/9/2483/2016/amt-9-2483-2016.pdf |
| Summary: | Nitrous acid (HONO) has been quantitatively measured in situ by differential
photolysis at 385 and 395 nm, and subsequent detection as nitric oxide (NO)
by the chemiluminescence reaction with ozone (O<sub>3</sub>). The technique has
been evaluated by Fourier transform infrared (FT-IR) spectroscopy to provide a direct HONO measurement in a simulation
chamber and compared side by side with a long absorption path optical
photometer (LOPAP) in the field. The NO–O<sub>3</sub> chemiluminescence technique
is robust, well characterized, and capable of sampling at low pressure, whilst
solid-state converter technology allows for unattended in situ HONO measurements in combination with fast time resolution and response. |
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| ISSN: | 1867-1381 1867-8548 |