TY  - JOUR
AU  - Bossmeyer, J.
AU  - Brauers, T.
AU  - Richter, C.
AU  - Rohrer, F.
AU  - Wegener, R.
AU  - Wahner, A.
TI  - Simulation Chamber Studies on the NO3 Chemistry of Atmospheric Aldehydes
JO  - Geophysical research letters
VL  - 33
SN  - 0094-8276
CY  - Washington, DC
PB  - American Geophysical Union
M1  - PreJuSER-52213
SP  - L18810
PY  - 2006
N1  - Record converted from VDB: 12.11.2012
AB  - 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.
KW  - J (WoSType)
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:000240943400002
DO  - DOI:10.1029/2006GL026778
UR  - https://juser.fz-juelich.de/record/52213
ER  -