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Measurement of Oxygenated Polycyclic Aromatic Hydrocarbons Associated with a Size-Segregated Urban Aerosol

Allen, Jonathan O. and Dookeran, Nameeta M. and Taghizadeh, Koli and Lafleur, Arthur L. and Smith, Kenneth A. and Sarofim, Adel F. (1997) Measurement of Oxygenated Polycyclic Aromatic Hydrocarbons Associated with a Size-Segregated Urban Aerosol. Environmental Science and Technology, 31 (7). pp. 2064-2070. ISSN 0013-936X. doi:10.1021/es960894g.

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Size-segregated atmospheric particles were collected in Boston, MA, using a micro-orifice impactor. The samples were analyzed for oxygenated polycyclic aromatic hydrocarbons (OPAH) using gas chromatography/mass spectrometry. Seven PAH ketones (1-acenaphthenone, 9-fluorenone, 11H-benzo[a]fluoren-11-one, 7H-benzo[c]fluoren-7-one, 11H-benzo[b]fluoren-11-one, benzanthrone, and 6H-benzo[cd]pyrene-6-one), four PAH diones (1,4-naphthoquinone, phenanthrenequinone, 5,12-naphthacenequinone, and benzo[a]pyrene-6,12-dione), and one PAH dicarboxylic acid anhydride (naphthalic anhydride) were identified. Seven additional compounds with mass spectra typical of OPAH were tentatively identified. OPAH were generally distributed among aerosol size fractions based on molecular weight. Compounds with molecular weights between 168 and 208 were ap proximately evenly distributed between the fine (aerodynamic diameter, D_p, < 2 μm) and coarse (D_p > 2 μm) particles. OPAH with molecular weights of 248 and greater were associated primarily with the fine aerosol fraction. Most OPAH were distributed with particle size in a broad, unimodal hump similar to the the distributions observed for PAH in the same samples. These results suggest that OPAH are initially associated with fine particles after formation by either combustion or gas phase photooxidation and then partition to larger particles by vaporization and sorption. Two OPAH were distributed in bimodal distributions with peaks at D_p ≈ 2 μm and D_p ≈ 2 μm. These bimodal distributions may be indicative of sorption behavior different from PAH and other OPAH.

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Allen, Jonathan O.0000-0002-5310-5266
Additional Information:© 1997 American Chemical Society. Received for review October 18, 1996. Revised manuscript received March 3, 1997. Accepted March 11, 1997. Publication Date (Web): June 30, 1997. We thank A. Rana Biswas for his assistance in assembling and testing the sampler. We thank John L. Durant for helpful discussions on OPAH identification. We also thank the staff of the Massachusetts Department of Environmental Protection for access to the sampling site. This research was supported by the National Institute of Environmental Health Sciences and the Environmental Protection Agency. One of us (J.O.A.) was partially supported by a grant provided by the S. C. Johnson Wax Company.
Funding AgencyGrant Number
Environmental Protection Agency (EPA)UNSPECIFIED
S. C. Johnson Wax CompanyUNSPECIFIED
Issue or Number:7
Record Number:CaltechAUTHORS:20180315-132421728
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Official Citation:Measurement of Oxygenated Polycyclic Aromatic Hydrocarbons Associated with a Size-Segregated Urban Aerosol. Jonathan O. Allen, Nameeta M. Dookeran, Koli Taghizadeh, Arthur L. Lafleur, Kenneth A. Smith, and, and Adel F. Sarofim. Environmental Science & Technology 1997 31 (7), 2064-2070 DOI: 10.1021/es960894g
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:85335
Deposited By: Tony Diaz
Deposited On:30 Mar 2018 19:31
Last Modified:13 Apr 2023 18:21

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