@article{
 title = {OH radical formation from the gas-phase reaction of ozone with terminal alkenes and the relationship between structure and mechanism},
 type = {article},
 year = {1999},
 identifiers = {[object Object]},
 pages = {8125-8138},
 volume = {103},
 websites = {<Go to ISI>://000083375800001},
 id = {2b291d8e-4a24-366b-8aa0-6ef7b9c2adcb},
 created = {2015-06-01T22:59:37.000Z},
 file_attached = {true},
 profile_id = {5a758209-74fb-3a9c-b322-2ae7f22f7b6c},
 group_id = {63e349d6-2c70-3938-9e67-2f6483f6cbab},
 last_modified = {2015-06-02T01:14:47.000Z},
 read = {false},
 starred = {false},
 authored = {false},
 confirmed = {true},
 hidden = {false},
 abstract = {The reactions of ozone with alkenes have been shown recently to lead to the direct production of OH radicals in quantities that vary from 7 to 100% depending on the structure of the alkene. OH radicals are the most important oxidizing species in the lower atmosphere, and the OH-alkene reaction is a large source of new OH radicals, important in urban and rural air during both day and night. Evidence for OH formation comes both from low-pressure direct measurements and from tracer experiments at high pressure, With the goal of measuring OH formation yields with good precision, a small-ratio relative rate technique was developed. This method uses small amounts of fast-reacting aromatics and aliphatic ethers to trace OH formation yields. Here, we report OH formation yields for a series of terminal alkenes reacting with ozone. Measured OH yields were 0.29 +/- 0.05, 0.24 +/- 0.05, 0.18 +/- 0.04, and 0.10 +/- 0.03 for 1-butene, 1-pentene, 1-hexene, and 1-octene, respectively. For the methyl-substituted terminal alkenes methyl propene and 2-methyl-1-butene, OH yields were 0.72 +/- 0.12 and 0.67 +/- 0.12, respectively. The results are discussed both in terms of their atmospheric implications and the relationship between structure and OH formation.},
 bibtype = {article},
 author = {Paulson, Suzanne E and Chung, Myeong Y and Hasson, Alam S},
 journal = {Journal of Physical Chemistry A},
 number = {41}
}

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OH radicals are the most important oxidizing species in the lower atmosphere, and the OH-alkene reaction is a large source of new OH radicals, important in urban and rural air during both day and night. Evidence for OH formation comes both from low-pressure direct measurements and from tracer experiments at high pressure, With the goal of measuring OH formation yields with good precision, a small-ratio relative rate technique was developed. This method uses small amounts of fast-reacting aromatics and aliphatic ethers to trace OH formation yields. Here, we report OH formation yields for a series of terminal alkenes reacting with ozone. Measured OH yields were 0.29 +/- 0.05, 0.24 +/- 0.05, 0.18 +/- 0.04, and 0.10 +/- 0.03 for 1-butene, 1-pentene, 1-hexene, and 1-octene, respectively. For the methyl-substituted terminal alkenes methyl propene and 2-methyl-1-butene, OH yields were 0.72 +/- 0.12 and 0.67 +/- 0.12, respectively. 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