World Library  

Add to Book Shelf
Flag as Inappropriate
Email this Book

The Heterogeneous Reaction of Hydroxyl Radicals with Sub-micron Squalane Particles: a Model System for Understanding the Oxidative Aging of Ambient Aerosols : Volume 9, Issue 9 (18/05/2009)

By Smith, J. D.

Click here to view

Book Id: WPLBN0003993371
Format Type: PDF Article :
File Size: Pages 14
Reproduction Date: 2015

Title: The Heterogeneous Reaction of Hydroxyl Radicals with Sub-micron Squalane Particles: a Model System for Understanding the Oxidative Aging of Ambient Aerosols : Volume 9, Issue 9 (18/05/2009)  
Author: Smith, J. D.
Volume: Vol. 9, Issue 9
Language: English
Subject: Science, Atmospheric, Chemistry
Collections: Periodicals: Journal and Magazine Collection, Copernicus GmbH
Publication Date:
Publisher: Copernicus Gmbh, Göttingen, Germany
Member Page: Copernicus Publications


APA MLA Chicago

Ahmed, M., Cappa, C. D., Kroll, J. H., Che, D. L., Liu, C. L., Wilson, K. R.,...Worsnop, D. R. (2009). The Heterogeneous Reaction of Hydroxyl Radicals with Sub-micron Squalane Particles: a Model System for Understanding the Oxidative Aging of Ambient Aerosols : Volume 9, Issue 9 (18/05/2009). Retrieved from

Description: Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA. The heterogeneous reaction of OH radicals with sub-micron squalane particles, in the presence of O2, is used as a model system to explore the fundamental chemical mechanisms that control the oxidative aging of organic aerosols in the atmosphere. Detailed kinetic measurements combined with elemental mass spectrometric analysis reveal that the reaction proceeds sequentially by adding an average of one oxygenated functional group per reactive loss of squalane. The reactive uptake coefficient of OH with squalane particles is determined to be 0.3±0.07 at an average OH concentration of ~1×1010 molecules cm−3. Based on a comparison between the measured particle mass and model predictions it appears that significant volatilization of a reduced organic particle would be extremely slow in the real atmosphere. However, as the aerosols become more oxygenated, volatilization becomes a significant loss channel for organic material in the particle-phase. Together these results provide a chemical framework in which to understand how heterogeneous chemistry transforms the physiochemical properties of particle-phase organic matter in the troposphere.

The heterogeneous reaction of hydroxyl radicals with sub-micron squalane particles: a model system for understanding the oxidative aging of ambient aerosols

Aiken, A. C., DeCarlo, P. F., and Jimenez, J. L.: Elemental analysis of organic species with electron ionization high-resolution mass spectrometry, Anal. Chem., 79, 8350–8358, 2007.; Aiken, A. C., Decarlo, P. F., Kroll, J. H., Worsnop, D. R., Huffman, J. A., Docherty, K. S., Ulbrich, I. M., Mohr, C., Kimmel, J. R., Sueper, D., Sun, Y., Zhang, Q., Trimborn, A., Northway, M., Ziemann, P. J., Canagaratna, M. R., Onasch, T. B., Alfarra, M. R., Prevot, A. S. H., Dommen, J., Duplissy, J., Metzger, A., Baltensperger, U., and Jimenez, J. L.: O/C and OM/OC ratios of primary, secondary, and ambient organic aerosols with high-resolution time-of-flight aerosol mass spectrometry, Environ. Sci. Technol., 42, 4478–4485, 2008.; Aschmann, S. M., Arey, J., and Atkinson, R.: Atmospheric chemistry of three C-10 alkanes, J. Phys. Chem. A, 105, 7598–7606, 2001.; Atkinson, R.: Atmospheric reactions of alkoxy and beta-hydroxyalkoxy radicals, Int. J. Chem. Kinet., 29, 99–111, 1997.; Atkinson, R.: Kinetics of the gas-phase reactions of OH radicals with alkanes and cycloalkanes, Atmos. Chem. Phys, 3, 2233–2307, 2003.; Atkinson, R., Baulch, D. L., Cox, R. A., Crowley, J. N., Hampson, R. F., Hynes, R. G., Jenkin, M. E., Rossi, M. J., and Troe, J.: Evaluated kinetic and photochemical data for atmospheric chemistry: Volume I - gas phase reactions of O-x, HOx, NOx and SOx species, Atmos. Chem. Phys, 4, 1461–1738, 2004.; Avila, D. V., Brown, C. E., Ingold, K. U., and Lusztyk, J.: Solvent Effects on the Competitive Beta-Scission and Hydrogen-Atom Abstraction Reactions of the Cumyloxyl Radical - Resolution of a Long-Standing Problem, J. Am. Chem. Soc., 115, 466–470, 1993.; Bagot, P. A. J., Waring, C., Costen, M. L., and McKendrick, K. G.: Dynamics of inelastic scattering of OH radicals from reactive and inert liquid surfaces, J. Phys. Chem. C, 112, 10868–10877, 2008.; Bennett, J. E. and Summers, R.: Product Studies of Mutual Termination Reactions of Sec-Alkylperoxy Radicals – Evidence for Non-Cyclic Termination, Can. J. Chem., 52, 1377–1379, 1974.; Bertram, A. K., Ivanov, A. V., Hunter, M., Molina, L. T., and Molina, M. J.: The reaction probability of OH on organic surfaces of tropospheric interest, J. Phys. Chem. A., 105, 9415–9421, 2001.; Broekhuizen, K. E., Thornberry, T., Kumar, P. P., and Abbatt, J. P. D.: Formation of cloud condensation nuclei by oxidative processing: Unsaturated fatty acids, J. Geophys. Res.-Atmos., 109, D24206, doi:10.1029/2004JD005298, 2004.; D'Anna, B., Andresen, W., Gefen, Z., and Nielsen, C. J.: Kinetic study of OH and NO3 radical reactions with 14 aliphatic aldehydes, Phys. Chem. Chem. Phys., 3, 3057, 2001.; DeCarlo, P. F., Slowik, J. G., Worsnop, D. R., Davidovits, P., and Jimenez, J. L.: Particle morphology and density characterization by combined mobility and aerodynamic diameter measurements. Part 1: Theory, Aerosol Sci. Tech., 39, 184–184, 2005.; DeCarlo, P. F., Kimmel, J. R., Trimborn, A., Northway, M. J., Jayne, J. T., Aiken, A. C., Gonin, M., Fuhrer, K., Horvath, T., Docherty, K. S., Worsnop, D. R., and Jimenez, J. L.: Field-deployable, high-resolution, time-of-flight aerosol mass spectrometer, Anal. Chem., 78, 8281–8289, 2006.; Finlayson-Pitts, B. J. and Pitts, J. N.: Chemistry of the Upper and Lower Atmosphere, Academic press, San Diago, CA, 2000.; Docherty, K. S., and Ziemann, P. J.: Reaction of oleic acid particles with NO3 radicals: Products, mechanism, and implications for radical-initiated organic aerosol oxidation, J. Phys. Chem. A., 110, 3567–3577, 2006.; Dusek, U., Frank, G. P., Hildebrandt, L., Curtius, J., Schneider, J., Walter, S., Chand, D., Drewnick, F., Hings, S., Jung, D., Borrmann, S., and Andreae, M. O.: Size matters more than chemistry for cloud-nucleating ability of aerosol particles, Science, 312, 1375–1378, 2006.; Ferenac, M. A., Davis, A. J., Holloway, A. S., and Dibble, T. S.: Isomerization and decomposition


Click To View

Additional Books

  • Aircraft and Ground-based Measurements o... (by )
  • Atmospheric Bromoform at MacE Head, Irel... (by )
  • Primary to Secondary Organic Aerosol: Ev... (by )
  • Long-term Real-time Measurements of Aero... (by )
  • Stratosphere-troposphere Exchange in a S... (by )
  • Immersion Freezing of Ice Nucleating Act... (by )
  • The Impacts of Fireworks Burning at Chin... (by )
  • Recent Advances in Understanding the Arc... (by )
  • Stratospheric Ozone Depletion from Futur... (by )
  • Wet Scavenging Limits the Detection of A... (by )
  • A Naming Convention for Atmospheric Orga... (by )
  • Absolute Absorption Cross-section and Ph... (by )
Scroll Left
Scroll Right


Copyright © World Library Foundation. All rights reserved. eBooks from World eBook Library are sponsored by the World Library Foundation,
a 501c(4) Member's Support Non-Profit Organization, and is NOT affiliated with any governmental agency or department.