%0 Journal Article
%A Anderson, R. S.
%A Iannone, R.
%A Thompson, A. E.
%A Rudolph, J.
%A Huang, L.
%T Carbon kinetic isotope effects in the gas-phase reactions of aromatic hydrocarbons with the OH radical at 296 ± 4 K
%J Geophysical research letters
%V 31
%@ 0094-8276
%C Washington, DC
%I American Geophysical Union
%M PreJuSER-40855
%P L15108
%D 2004
%Z Record converted from VDB: 12.11.2012
%X The carbon kinetic isotope effects (KIEs) of the room temperature reactions of benzene and several light alkyl benzenes with OH radicals were studied in a reaction chamber at ambient pressure using gas chromatography coupled with online combustion and isotope ratio mass spectrometry (GCC-IRMS). The KIEs are reported in per mil according to epsilon (parts per thousand)=(KIE-1) x 1000, where KIE=k(12)/k(13). The following average KIEs were obtained, (all in parts per thousand): benzene 7.53+/-0.50; toluene 5.95+/-0.28; ethylbenzene 4.34+/-0.28; o-xylene 4.27+/-0.05, p-xylene 4.83+/-0.81; o-ethyltoluene 4.71+/-0.12 and 1,2,4-trimethylbenzene 3.18+/-0.09. Our KIE value for benzene + OH agrees with the only reported value known to us [Rudolph et al., 2000]. It is shown that measurements of the stable carbon isotope ratios of light aromatic compounds should be extremely useful to study atmospheric processing by the OH radical.
%K J (WoSType)
%F PUB:(DE-HGF)16
%9 Journal Article
%U <Go to ISI:>//WOS:000223342300003
%R 10.1029/2004GL020089
%U https://juser.fz-juelich.de/record/40855