Gas-phase chemistry of benzyl alcohol: Reaction rate constants and products with OH radical and ozone |
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| Authors: | Joel C. Harrison J.R. Wells |
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| Affiliation: | 1. Beijing National Laboratory for Molecular Sciences (BNLMS), State Key Laboratory for Structural Chemistry of Unstable and Stable Species, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China;2. Laboratory of Atmospheric Physico-Chemistry, Anhui Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Hefei 230031, China;3. Department of Chemistry, University of Copenhagen, Universitetsparken 5, DK-2100 Copenhagen Ø, Denmark;3. From the Cardiovascular Research Center/Thrombosis Research Center, Department of Pharmacology, Temple University School of Medicine, Philadelphia, Pennsylvania 19140,;4. the Department of Cardiology, Second Affiliated Hospital of Nanchang University, Nanchang, Jiangxi 330006, China,;5. the Department of Cardiology, Jiangxi Provincial People''s Hospital, Nanchang, Jiangxi 330006, China,;6. the Department of Medicine, Griffin Hospital, Derby, Connecticut 06418, and;1. Collaborative Innovation Center on Forecast and Evaluation of Meteorological Disasters, Key Laboratory for Aerosol-Cloud-Precipitation of China Meteorological Administration, Nanjing University of Information Science & Technology, Nanjing, China;2. Center for Atmospheric Particle Studies, Carnegie Mellon University, Pittsburgh, USA;3. Department of Chemical Engineering, University of Patras, Patra, Greece;4. Institute of Chemical Engineering Sciences (ICE-HT), FORTH, Patra, Greece;5. RJ Lee Group, Inc., Monroeville, USA;1. GSMA, UMR CNRS 7331, Université de Reims Champagne Ardenne, U.F.R. Sciences Exactes et Naturelles Moulin de la Housse, BP 1039, 51687 Reims, France;2. Equipe de Génie de l’Environnement et de Biotechnologie, ENSA, Université Ibn Zohr, BP 1136, Agadir, Morocco |
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| Abstract: | A bimolecular rate constant, kOH+Benzyl alcohol, of (28 ± 7) × 10?12 cm3 molecule?1 s?1 was measured using the relative rate technique for the reaction of the hydroxyl radical (OH) with benzyl alcohol, at (297 ± 3) K and 1 atm total pressure. Additionally, an upper limit of the bimolecular rate constant, kO3+Benzyl alcohol, of approximately 6 × 10?19 cm3 molecule?1 s?1 was determined by monitoring the decrease in benzyl alcohol concentration over time in an excess of ozone (O3). To more clearly define part of benzyl alcohol's indoor environment degradation mechanism, the products of the benzyl alcohol + OH were also investigated. The derivatizing agents O-(2,3,4,5,6-pentafluorobenzyl)hydroxylamine (PFBHA) and N,O-bis(trimethylsilyl) trifluoroacetamide (BSTFA) were used to positively identify benzaldehyde, glyoxal and 4-oxopentanal as benzyl alcohol/OH reaction products. The elucidation of other reaction products was facilitated by mass spectrometry of the derivatized reaction products coupled with plausible benzyl alcohol/OH reaction mechanisms based on previously published volatile organic compound/OH gas-phase reaction mechanisms. |
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