This title appears in the Scientific Report :
2006
Please use the identifier:
http://dx.doi.org/10.1029/2006GL026778 in citations.
Please use the identifier: http://hdl.handle.net/2128/7654 in citations.
Simulation Chamber Studies on the NO3 Chemistry of Atmospheric Aldehydes
Simulation Chamber Studies on the NO3 Chemistry of Atmospheric Aldehydes
Absolute reaction rate studies of NO3 radicals with 4 aldehydes were performed in the atmosphere simulation chamber SAPHIR at the Research Center Julich. Rate coefficients ( ethanal: 2.6 +/- 0.5, propanal: 5.8 +/- 1.0, butanal: 11.9 +/- 1.4, benzaldehyde: 2.2 +/- 0.6; in 10(-15) cm(3) s(-1) at 300 K...
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Personal Name(s): | Bossmeyer, J. |
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Brauers, T. / Richter, C. / Rohrer, F. / Wegener, R. / Wahner, A. | |
Contributing Institute: |
Troposphäre; ICG-II JARA-ENERGY; JARA-ENERGY |
Published in: | Geophysical research letters, 33 (2006) S. L18810 |
Imprint: |
Washington, DC
American Geophysical Union
2006
|
Physical Description: |
L18810 |
DOI: |
10.1029/2006GL026778 |
Document Type: |
Journal Article |
Research Program: |
Atmosphäre und Klima |
Series Title: |
Geophysical Research Letters
33 |
Subject (ZB): | |
Link: |
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Publikationsportal JuSER |
Please use the identifier: http://hdl.handle.net/2128/7654 in citations.
Absolute reaction rate studies of NO3 radicals with 4 aldehydes were performed in the atmosphere simulation chamber SAPHIR at the Research Center Julich. Rate coefficients ( ethanal: 2.6 +/- 0.5, propanal: 5.8 +/- 1.0, butanal: 11.9 +/- 1.4, benzaldehyde: 2.2 +/- 0.6; in 10(-15) cm(3) s(-1) at 300 K) were determined from measured concentration time profiles of aldehydes and NO3 at near ambient conditions. The values for the aliphatic aldehydes are in good agreement with the most recent recommendations ( IUPAC Subcommittee on Gas Kinetic Data Evaluation for Atmospheric Chemistry: Evaluated kinetic and photochemical data for atmospheric chemistry, 2005, available at http:// www. iupac- kinetic. ch. cam. ac. uk). The measured concentration- time profiles of precursor aldehydes, NO3, NO2, and of product aldehydes were compared to model calculations based on the MCM v3 ( Jenkin et al., 2003; Saunders et al., 2003). Differences between measurements and model are attributed to a major interference of the GC system to peroxyacyl nitrates. In addition modifications to the rate constants in the MCM are suggested. |