TY  - JOUR
AU  - Tillmann, R.
AU  - Saathoff, H.
AU  - Brauers, T.
AU  - Kiendler-Scharr, A.
AU  - Mentel, T. F.
TI  - Temperature dependence of the rate coefficient for the a-pinene reaction with ozone in the range between 243 K and 303 K
JO  - Physical Chemistry Chemical Physics
VL  - 11
SN  - 1463-9076
CY  - Cambridge
PB  - RSC Publ.
M1  - PreJuSER-4706
SP  - 2323 - 2328
PY  - 2009
N1  - Record converted from VDB: 12.11.2012
AB  - The absolute rate coefficient for the reaction of alpha-pinene with ozone was determined in the temperature range between 243 K and 303 K at atmospheric pressure. In total, 30 experiments were performed in the large (85 m3) temperature-controlled simulation chamber AIDA, where the concentrations of the reactants ozone and alpha-pinene were measured directly. An Arrhenius expression for the alpha-pinene + ozone reaction was derived with a pre-exponential factor of (1.4 +/- 0.4) x 10(-15) cm3 s(-1) and a temperature coefficient of (833 +/- 86) K. This rate coefficient is in good agreement (-5%) with the current IUPAC (IUPAC 2007) recommendation at 298 K. The IUPAC recommendation is significantly larger (+27%), around 243 K where the recommended values were extrapolated from higher temperatures. This finding is relevant for tropical regions where strong updrafts can rapidly transport reactive hydrocarbons like alpha-pinene from the boundary layer into the cold regions of the free troposphere.
KW  - Absorption
KW  - Kinetics
KW  - Mass Spectrometry
KW  - Monoterpenes: chemistry
KW  - Ozone: chemistry
KW  - Protons
KW  - Temperature
KW  - Tropical Climate
KW  - Ultraviolet Rays
KW  - Monoterpenes (NLM Chemicals)
KW  - Protons (NLM Chemicals)
KW  - Ozone (NLM Chemicals)
KW  - alpha-pinene (NLM Chemicals)
KW  - J (WoSType)
LB  - PUB:(DE-HGF)16
C6  - pmid:19305907
UR  - <Go to ISI:>//WOS:000264374700022
DO  - DOI:10.1039/b813407c
UR  - https://juser.fz-juelich.de/record/4706
ER  -