Emission characteristics of Mexico City vehicles

Journal Article · Sat Oct 31 23:00:00 EST 1992 · Air and Waste; (United States)

DOI:https://doi.org/10.1080/10473289.1992.10467088· OSTI ID:6905239

Beaton, S P; Bishop, G A; Stedman, D H ^[1]

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1. Univ. of Denver, CO (United States)

The University of Denver remote sensor for automobile exhaust was set up for nine days at five locations in the Mexico City area. A total of 31,838 valid readings for CO and HC emissions were obtained. The emissions distribution was unlike any other we have observed in North America or Europe, in that the emissions for both CO and HC were vastly greater than seen elsewhere. The readings are discussed in terms of the fraction of CO and HC which would be measured by a tailpipe probe, and in terms of grams emitted per gallon of gasoline. The median CO emission was 3.8 percent, with half of the CO emissions coming from the 24 percent of the fleet with over 6.6 percent CO in the exhaust. The median HC emission was 1,100 parts per million measured as propane equivalent, while half the emissions come from twelve percent of the fleet with more than 4,000 ppm propane equivalent in the exhaust. 8 refs., 6 figs., 3 tabs.

• OSTI ID: 6905239
• Journal Information: Air and Waste; (United States), Journal Name: Air and Waste; (United States) Vol. 42:11; ISSN AIWAE2
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020900* -- Petroleum-- Environmental Aspects
54 ENVIRONMENTAL SCIENCES
540120 -- Environment
Atmospheric-- Chemicals Monitoring & Transport-- (1990-)
AIR POLLUTION
AUTOMOBILES
CARBON COMPOUNDS
CARBON MONOXIDE
CARBON OXIDES
CHALCOGENIDES
CHEMICAL COMPOSITION
DEVELOPING COUNTRIES
ECOLOGICAL CONCENTRATION
GASEOUS WASTES
HYDROCARBONS
LATIN AMERICA
MEXICO
NORTH AMERICA
ORGANIC COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
POLLUTION
URBAN AREAS
VEHICLES
WASTES