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Measurement of C_(24)H_(14) Polycyclic Aromatic Hydrocarbons Associated with a Size-Segregated Urban Aerosol

Allen, Jonathan O. and Durant, John L. and Dookeran, Nameeta M. and Taghizadeh, Koli and Plummer, Elaine F. and Lafleur, Arthur L. and Sarofim, Adel F. and Smith, Kenneth A. (1998) Measurement of C_(24)H_(14) Polycyclic Aromatic Hydrocarbons Associated with a Size-Segregated Urban Aerosol. Environmental Science and Technology, 32 (13). pp. 1928-1932. ISSN 0013-936X. doi:10.1021/es970919r.

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Six-ring C_(24)H_(14) (MW 302) polycyclic aromatic hydrocarbons (PAH), some of which are potent mutagens, are present in urban aerosols. Size-segregated atmospheric aerosol samples from Boston, MA, were analyzed for C_(24)H_(14) PAH by gas chromatography/mass spectrometry. Eleven peaks were found with mass to charge ratios of 302; of these, eight were identified using authentic standards. Five of the peaks were quantified. For each of these five, the distributions with respect to particle size were bimodal with the majority of the mass associated with accumulation mode particles (0.3−1.0 μm) and a smaller fraction of the mass associated with ultrafine mode particles (0.09−0.14 μm). These distribu tions are similar to those observed for PAH of molecular weight 252−278 in the same sample but different from those of benzo[ghi]perylene (MW 276) and coronene (MW 300), which were associated to a greater degree with ultrafine particles. The data suggest that C_(24)H_(14) PAH repartition to larger particles by vaporization and sorption more rapidly than do benzo[ghi]perylene and coronene. The total concentration of C_(24)H_(14) PAH (1.5 ng/m^3) was comparable to that of benzo[a]pyrene in the same sample. Because of their mutagenicities, C_(24)H_(14) PAH may make a contribution to the genotoxicity of urban aerosols comparable to that of benzo[a]pyrene.

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Alternate Title:Measurement of C24H14 Polycyclic Aromatic Hydrocarbons Associated with a Size-Segregated Urban Aerosol
Additional Information:© 1998 American Chemical Society. Received for review October 20, 1997. Revised manuscript received April 1, 1998. Accepted April 9, 1998. Publication Date (Web): May 21, 1998. We thank A. Rana Biswas for his assistance in assembling and testing the sampler. 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.
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National Institute of Environmental Health SciencesUNSPECIFIED
Environmental Protection Agency (EPA)UNSPECIFIED
S. C. Johnson Wax CompanyUNSPECIFIED
Issue or Number:13
Record Number:CaltechAUTHORS:20180315-133252882
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Official Citation:Measurement of C24H14 Polycyclic Aromatic Hydrocarbons Associated with a Size-Segregated Urban Aerosol. Jonathan O. Allen, John L. Durant, Nameeta M. Dookeran, Koli Taghizadeh, Elaine F. Plummer, Arthur L. Lafleur, Adel F. Sarofim, and Kenneth A. Smith. Environmental Science & Technology 1998 32 (13), 1928-1932 DOI: 10.1021/es970919r
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:85337
Deposited By: Tony Diaz
Deposited On:30 Mar 2018 19:34
Last Modified:15 Nov 2021 20:27

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