Abstract
A discharge-flow system equipped with a laser-induced fluorescence (LIF) cell to detect NO2 and a multi-pass absorption cell to detect NO3 has been used to study the reactionCH3C(O)O-2+NO3-->CH3C(O)O+NO2+O-2 (1)at T = 403-443 K and P = 2-2.4 Torr. The rate constant was found to be independent of temperature with a value of k(1) = (4+/-1) x 10(-12) cm(3) molecule(-1) s(-1). The likely mechanism for the reaction is discussed. The atmospheric implications of reaction (1) are investigated using a range of models and several case studies are presented, comparing model results with actual held measurements. It is concluded that reaction (1) participates in a cycle which can generate OH at night. This reaction cycle (see text) can operate throughout the continental boundary layer, but may even occur in remote regions.
| Original language | English |
|---|---|
| Pages (from-to) | 2211-2222 |
| Number of pages | 12 |
| Journal | Journal Of The Chemical Society-Faraday Transactions |
| Volume | 92 |
| Issue number | 12 |
| Publication status | Published - 1 Jan 1996 |
Keywords
- Observatory Photochemistry Experiment
- Radicals
- Atmosphere
- Rate Constants
- Thermal-Decomposition
- Kinetics
- Ho2
- Oh
- Peroxyacetyl Nitrate
- Gas-Phase Reactions