Chemical Sinks of Organic Aerosol: Kinetics and Products of the Heterogeneous Oxidation of Erythritol and Levoglucosan
Name
shk_el_manuscript_revised_FINAL.pdf
Size
312.34 KB
Format
Adobe PDF
Checksum (MD5)
f4d620def0f7f42aace4a14602b964f1
Author(s)
Kessler, Sean Herbert
Smith, Jared D.
Che, Dung L.
Worsnop, Douglas R.
Wilson, Kevin R.
Kroll, Jesse
Date Issued
September 2010
Journal
Environmental Science and Technology
Publisher
American Chemical Society
Citation
Kessler, Sean H. et al. “Chemical Sinks of Organic Aerosol: Kinetics and Products of the Heterogeneous Oxidation of Erythritol and Levoglucosan.” Environmental Science & Technology 44.18 (2010): 7005–7010. Web.
Version
Author's final manuscript
Abstract
The heterogeneous oxidation of pure erythritol (C[subscript 4]H[subscript 10]O[subscript 4]) and levoglucosan (C[subscript 6]H[subscript 10]O[subscript 5]) particles was studied in order to evaluate the effects of atmospheric aging on the mass and chemical composition of atmospheric organic aerosol. In contrast to what is generally observed for the heterogeneous oxidation of reduced organics, substantial volatilization is observed in both systems. However, the ratio of the decrease in particle mass to the decrease in the concentration of the parent species is about three times higher for erythritol than for levoglucosan, indicating that details of chemical structure (such as carbon number, cyclic moieties, and oxygen-containing functional groups) play a governing role in the importance of volatilization reactions. The kinetics of the reaction indicate that while both compounds react at approximately the same rate, reactions of their oxidation products appear to be slowed substantially. Estimates of volatilities of organic species based on elemental composition measurements suggest that the heterogeneous oxidation of oxygenated organics may be an important loss mechanism of organic aerosol.
MIT Department
Massachusetts Institute of Technology. Department of Chemistry
Massachusetts Institute of Technology. Department of Civil and Environmental Engineering
Terms of Use
Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.
Persistent DSpace Link
DOI of Published Version
https://doi.org/10.1021/es101465m
