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| Reed, Chris; Evans, Mathew J.; Di Carlo, Piero; Lee, James D.; Carpenter, Lucy J.. |
| Measurement of NO2 at low concentrations (tens of ppts) is non-trivial. A variety of techniques exist, with the conversion of NO2 into NO followed by chemiluminescent detection of NO being prevalent. Historically this conversion has used a catalytic approach (molybdenum); however, this has been plagued with interferences. More recently, photolytic conversion based on UV-LED irradiation of a reaction cell has been used. Although this appears to be robust there have been a range of observations in low-NOx environments which have measured higher NO2 concentrations than might be expected from steady-state analysis of simultaneously measured NO, O-3, jNO(2), etc. A range of explanations exist in the literature, most of which focus on an unknown and unmeasured... |
| Tipo: Text |
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| Ano: 2016 |
URL: https://archimer.ifremer.fr/doc/00353/46415/46160.pdf |
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