HR: 1340h
AN: A23C-1473    [Abstracts]
TI: Analysis of Air Toxics From NOAA WP-3 Aircraft Measurements During the TexAQS 2006 Campaign: Comparison With Emission Inventories and Additive Inhalation Risk Factors
AU: * Del Negro, L A
EM: delnegro@lakeforest.edu
AF: Lake Forest College, 555 N Sheridan Rd, Lake Forest, IL 60045, United States
AU: Warneke, C
EM: Carsten.Warneke@noaa.gov
AF: NOAA, ESRL, Chemical Sciences Division, 325 Broadway RCSD7, Boulder, CO 80305, United States
AU: Warneke, C
EM: Carsten.Warneke@noaa.gov
AF: Cooperative Institute for Research in Environmental Sciences, University of Colorado, Boulder, CO 80309, United States
AU: de Gouw, J A
EM: Joost.deGouw@noaa.gov
AF: NOAA, ESRL, Chemical Sciences Division, 325 Broadway RCSD7, Boulder, CO 80305, United States
AU: de Gouw, J A
EM: Joost.deGouw@noaa.gov
AF: Cooperative Institute for Research in Environmental Sciences, University of Colorado, Boulder, CO 80309, United States
AU: Atlas, E
EM: eatlas@rsmas.miami.edu
AF: Rosenstiel School of Marine & Atmospheric Science, University of Miami, Miami, FL 33149, United States
AU: Lueb, R
EM: rlueb@rsmas.miami.edu
AF: Rosenstiel School of Marine & Atmospheric Science, University of Miami, Miami, FL 33149, United States
AU: Zhu, X
EM: xzhu@rsmas.miami.edu
AF: Rosenstiel School of Marine & Atmospheric Science, University of Miami, Miami, FL 33149, United States
AU: Pope, L
EM: lpope@rsmas.miami.edu
AF: Rosenstiel School of Marine & Atmospheric Science, University of Miami, Miami, FL 33149, United States
AU: Schauffler, S
EM: sues@ucar.edu
AF: Earth Observing Laboratory, National Center for Atmospheric Research, Boulder, CO 80307, United States
AU: Hendershot, R
EM: rogerh@ucar.edu
AF: Earth Observing Laboratory, National Center for Atmospheric Research, Boulder, CO 80307, United States
AU: Washenfelder, R
EM: Rebecca.Washenfelder@noaa.gov
AF: Cooperative Institute for Research in Environmental Sciences, University of Colorado, Boulder, CO 80309, United States
AU: Fried, A
EM: fried@ucar.edu
AF: Earth Observing Laboratory, National Center for Atmospheric Research, Boulder, CO 80307, United States
AU: Richter, D
EM: dr@ucar.edu
AF: Earth Observing Laboratory, National Center for Atmospheric Research, Boulder, CO 80307, United States
AU: Walega, J G
EM: walega@ucar.edu
AF: Earth Observing Laboratory, National Center for Atmospheric Research, Boulder, CO 80307, United States
AU: Weibring, P
EM: weibring@ucar.edu
AF: Earth Observing Laboratory, National Center for Atmospheric Research, Boulder, CO 80307, United States
AB: Benzene and nine other air toxics classified as human carcinogens by the International Agency for Research on Cancer (IARC) were measured from the NOAA WP-3 aircraft during the TexAQS 2006 campaign. In-situ measurements of benzene, measured with a PTR-MS instrument, are used to estimate emission fluxes for comparison with point source emission inventories developed by the Texas Commission on Environmental Quality. Mean and median mixing ratios for benzene, acetaldehyde, formaldehyde, 1,3-butadiene, carbon tetrachloride, chloroform, 1,2-dichloroethane, dibromoethane, dichloromethane, and vinyl chloride, encountered over the city of Houston during the campaign, are combined with inhalation unit risk factor values developed by the California Environmental Protection Agency and the United States Environmental Protection Agency to estimate the additive inhalation risk factor. This additive risk factor represents the risk associated with lifetime (70 year) exposure at the levels measured and should not be used as an absolute indicator of risk to individuals. However, the results are useful for assessments of changing relative risk over time, and for identifying dominant contributions to the overall air toxic risk.
DE: 0345 Pollution: urban and regional (0305, 0478, 4251)
DE: 0365 Troposphere: composition and chemistry
SC: Atmospheric Sciences [A]
MN: 2007 Fall Meeting