HR: 16:15h
AN: A14A-02    [Abstracts]
TI: Nitro-PAHs in Mexico City: Can Their Presence Be Attributed to Hydroxyl Radical Reactions?
AU: * Arey, J
EM: janet.arey@ucr.edu
AF: Air Pollution Research Center, University of California, Riverside, Riverside, CA 92521 United States
AU: Bethel, H L
EM: heidibethel@yahoo.com
AF: Air Pollution Research Center, University of California, Riverside, Riverside, CA 92521 United States
AU: Reisen, F
EM: fabienne_reisen@hotmail.com
AF: Air Pollution Research Center, University of California, Riverside, Riverside, CA 92521 United States
AU: Brune, W H
EM: brune@essc.psu.edu
AF: Dept. of Meteorology, Pennsylvania State University, University Park, PA 16802 United States
AB: Nitrated polycyclic aromatic hydrocarbons (nitro-PAHs) are genotoxic species present in ambient air from direct emission sources and as the result of atmospheric reactions of the parent PAHs. Data on selected 2 to 4-ring PAHs and their nitrated derivatives will be reported for samples collected April 27-30, 2003 in Mexico City. 2- Nitrofluoranthene and 2-nitropyrene, isomers formed from atmospheric reactions, were present in higher levels in the filter samples than 1-nitropyrene, an isomer found in direct emissions such as diesel exhaust. Data indicating that these nitro-PAHs were formed from hydroxyl radical-initiated reactions will be presented.
DE: 0300 ATMOSPHERIC COMPOSITION AND STRUCTURE
DE: 0317 Chemical kinetic and photochemical properties
DE: 0368 Troposphere--constituent transport and chemistry
SC: Atmospheric Sciences [A]
MN: 2004 AGU Fall Meeting