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Chemical Sciences Division
Atkinson, R.; Tuazon, E.C.; Aschmann, S.M.|
Atmospheric Chemistry of 2-Pentanone and 2-Heptanone
Environ. Sci. Technol.
623 - 631
n-C5H11COCH3 + ·OH → Products
Cyclohexane + ·OH → Products
Reference reaction order:
Pressure: 0.99 bar
Relative rate value measured
Static or low flow - Data taken vs time
In real time
Fourier transform (FTIR)
Experiments were carried out in three different setups:
- a 5870 L evacuable Teflon coated chamber with FTIR;
- a 7900 L Teflon chamber with GC-FID and GC-MS
- a 7500 L Teflon chamber with the atmosphere pressure ionization MS (API-MS)
OH was generated by the photolysis of CH3ONO or C2H5ONO at wavelengths above 300 nm in the presence of NO.
The reference reaction was OH + cyclohexene with the accepted k = 7.21E-12 cm3molecule-1s-1.
The resulting rate constant is given with the indicated errors which are two standard deviations.
Reaction products and branching ratios are reported:
formaldehyde: 0.38 ?0.08
organic nitrates: 0.18 ?0.05
acetaldehyde: 0.15 ?0.03
propanal: 0.10 ?0.02
butanal: 0.07 ?0.01
pentanal: 0.09 ?0.01
View full bibliographic record.