Second order rate constants for the reactions of hydroxyl radicals and sulfate radicals with monoterpenes in the aqueous-phase have been determined by electron pulse radiolysis and transient absorption spectroscopy using the linear accelerator facilities at the University ofNotre Dame. The two monoterpenes examined in this study were geraniol and camphor. The rate constant for geraniol reaction with the hydroxyl radical and sulfate radical were: k(295 K)(•OH) = (1.01 ± 0.02) x 1010 M-1s -1, and k(292 K)(SO4-) = (3.47 ± 0.09) x 10 9M-1s-1 respectively, the analogous camphor reaction value for the hydroxyl radical was k(292 K)(•OH) = (3.63 ± 0.17) x 109M-1s-1. Additionally, rate constants over the temperature range 283-313 K were measured, with the Arrhenius behavior was determined as: lnk(T)•OH+geraniol = -(13.3 X 103) 1/RT + 24.9, lnk(T) •SO4-+geraniol = -(14.3 x 103) 1/RT + 27.9, and lnk(T)•OH+camphor = -(7.00 x 103) 1/RT + 24.9. These functions were used to estimate the reactivity of these terpenes under tropospheric conditions.
|Commitee:||Brazier, Christopher, Lopez, Marco|
|School:||California State University, Long Beach|
|School Location:||United States -- California|
|Source:||MAI 51/04M(E), Masters Abstracts International|
|Subjects:||Atmospheric Chemistry, Environmental science|
Copyright in each Dissertation and Thesis is retained by the author. All Rights Reserved
The supplemental file or files you are about to download were provided to ProQuest by the author as part of a
dissertation or thesis. The supplemental files are provided "AS IS" without warranty. ProQuest is not responsible for the
content, format or impact on the supplemental file(s) on our system. in some cases, the file type may be unknown or
may be a .exe file. We recommend caution as you open such files.
Copyright of the original materials contained in the supplemental file is retained by the author and your access to the
supplemental files is subject to the ProQuest Terms and Conditions of use.
Depending on the size of the file(s) you are downloading, the system may take some time to download them. Please be