HR: 0800h
AN: A11A-0006    [Abstracts]
TI: Evaluation of Standard Measurement Techniques for Gas Phase Ozone and Nitrogen Dioxide in a Polluted Urban Environment
AU: Molina, M
EM: mmolina@mit.edu
AF: Departments of Earth, Atmospheric and Planetary Sciences and of Chemistry, Massachusetts Institute of Technology, 77 Massachusetts Ave., Cambridge, MA 02139 United States
AU: * Dunlea, E J
AF: Departments of Earth, Atmospheric and Planetary Sciences and of Chemistry, Massachusetts Institute of Technology, 77 Massachusetts Ave., Cambridge, MA 02139 United States
AU: * Dunlea, E J
AF: Cooperative Institute for Research in Environmental Sciences, University of Colorado at Boulder, UCB 216, Boulder, CO 80309 United States
AU: Molina, L T
AF: Departments of Earth, Atmospheric and Planetary Sciences and of Chemistry, Massachusetts Institute of Technology, 77 Massachusetts Ave., Cambridge, MA 02139 United States
AU: Volkamer, R
AF: Departments of Earth, Atmospheric and Planetary Sciences and of Chemistry, Massachusetts Institute of Technology, 77 Massachusetts Ave., Cambridge, MA 02139 United States
AU: Lamb, B
AF: Washington State University, Department of Civil & Environmental Engineering, Sloan Hall 101, Spokane Street, Pullman, WA 99164-2910 United States
AU: Allwine, E
AF: Washington State University, Department of Civil & Environmental Engineering, Sloan Hall 101, Spokane Street, Pullman, WA 99164-2910 United States
AU: Herndon, S C
AF: Aerodyne Research, Inc., 45 Manning Rd, Billerica, MA 01821-3976 United States
AU: Zahniser, M S
AF: Aerodyne Research, Inc., 45 Manning Rd, Billerica, MA 01821-3976 United States
AU: Shorter, J H
AF: Aerodyne Research, Inc., 45 Manning Rd, Billerica, MA 01821-3976 United States
AU: Wormhoudt, J C
AF: Aerodyne Research, Inc., 45 Manning Rd, Billerica, MA 01821-3976 United States
AU: Kolb, C E
AF: Aerodyne Research, Inc., 45 Manning Rd, Billerica, MA 01821-3976 United States
AU: Marley, N
AF: Argonne National Laboratory, Environmental Research Division, Bldg. 203/ER, Argonne, IL 60439 United States
AU: Gaffney, J
AF: Argonne National Laboratory, Environmental Research Division, Bldg. 203/ER, Argonne, IL 60439 United States
AB: The performance of standard EPA-certified techniques for monitoring the ambient concentrations of O3 by UV absorption and NO2 by its chemiluminescent reaction with O3 has been evaluated using data from a five-week long field campaign in the Mexico City Metropolitan Area in the spring of 2003. Comparisons of multiple measurements of both O3 and NO2 are described. In particular, open path DOAS measurements of O3 and NO2 and a tunable diode laser absorption measurement of NO2 are compared with co-located standard techniques. The potential interference of gas phase aromatic hydrocarbons to the UV absorption measurement of O3 and the potential interference of gas phase organic nitrates to the standard NO2 measurement are examined. Potential implications for air quality modeling and repercussions for monitoring networks are discussed.
DE: 0345 Pollution--urban and regional (0305)
DE: 0365 Troposphere--composition and chemistry
DE: 0368 Troposphere--constituent transport and chemistry
DE: 0394 Instruments and techniques
SC: Atmospheric Sciences [A]
MN: 2004 AGU Fall Meeting