Receptor modeling of volatile organic compounds. 1. Emission inventory and validation
- Univ. of Illinois, Chicago (United States)
Air samples, speciated for 23 organics (23-NMOC) by gas chromatography, were collected on 15 days between July 1 and September 9, 1987, at three sites in Chicago, 20--70 km apart. Four-hour samples were collected simultaneously at all three locations, along with continuous measures of NO/NO[sub 2] and an additional 20-h sample at one site. The 23-NMOC concentration pattern was evaluated for each of 55 samples using a chemical mass balance (CMB) receptor model and eight source categories: vehicle exhaust, gasoline vapor, petroleum refineries, vapor degreasing, architectural coatings, graphic arts, dry cleaning, and wastewater treatment. The largest contribution was from vehicles (33% of total VOC). Average predictions agreed well with the emission inventory with the exception of petroleum refineries, which were over 5 times the inventory values. Comparison of CMB results with wind trajectories and refinery locations supported this conclusion. Atmospheric reactivity was not a problem for source allocation for the typical 3--5-h time periods between release and sampling. 37 refs., 5 figs., 4 tabs.
- OSTI ID:
- 6064556
- Journal Information:
- Environmental Science and Technology; (United States), Journal Name: Environmental Science and Technology; (United States) Vol. 27:4; ISSN 0013-936X; ISSN ESTHAG
- Country of Publication:
- United States
- Language:
- English
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54 ENVIRONMENTAL SCIENCES
540110*
AIR POLLUTION MONITORING
AIR SAMPLERS
CHALCOGENIDES
CHICAGO
CHROMATOGRAPHY
DATA
DEVELOPED COUNTRIES
EQUIPMENT
EXHAUST GASES
EXPERIMENTAL DATA
FLUIDS
FUELS
GAS CHROMATOGRAPHY
GASEOUS WASTES
GASES
GASOLINE
HYDROGEN COMPOUNDS
ILLINOIS
INDUSTRIAL PLANTS
INFORMATION
LIQUID FUELS
LIQUID WASTES
MATTER
METEOROLOGY
MONITORING
NITROGEN COMPOUNDS
NITROGEN OXIDES
NORTH AMERICA
NUMERICAL DATA
ORGANIC COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
PETROLEUM PRODUCTS
PETROLEUM REFINERIES
SAMPLERS
SEPARATION PROCESSES
URBAN AREAS
USA
VOLATILE MATTER
WASTE WATER
WASTES
WATER