Sulfate emissions from catalyst-equipped automobiles on the highway

Journal Article · Thu Mar 01 04:00:00 EST 1979 · J. Air Pollut. Control Assoc.; (United States)

DOI:https://doi.org/10.1080/00022470.1979.10470790· OSTI ID:6468563

Pierson, W R; Brachaczek, W W; McKee, D E

The essential effect of the present results is to reinforce substantially the conclusions drawn earlier. H/sub 2/SO/sub 4/ from catalyst-equipped 49-state cars on the highway has still not developed into a serious problem, as of 1977, after 3 model-years of production. Sulfate concentrations in the tunnel are not greatly higher than ambient levels in spite of the lack of opportunity for atmospheric dispersion of the emissions. And even so, approx. 2/3 of the vehicle-generated SO/sub 4//sup -2/ in the tunnel still comes from the Diesel trucks, whose SO/sub 4//sup -2/ emission rates are considerable. Diesel cars may eventually appear in substantial numbers; their SO/sub 4//sup -2/ emission rates are currently approx. 10 mg/km, comparable to a catalyst-equipped gasoline powered car or approx. 1/3 that of a heavy-duty Diesel. It should be emphasized that the present results and conclusions would not necessarily apply in California (where different emission control technology exists) or in future years even at the present site (as emission standards and control systems continue to change).

• Research Organization: Ford Motor Co., Dearborn, MI
• OSTI ID: 6468563
• Journal Information: J. Air Pollut. Control Assoc.; (United States), Journal Name: J. Air Pollut. Control Assoc.; (United States) Vol. 29:3; ISSN JPCAA
• Country of Publication: United States
• Language: English

Related Subjects

33 ADVANCED PROPULSION SYSTEMS
330702 -- Emission Control-- Carbon Monoxide
500200* -- Environment
Atmospheric-- Chemicals Monitoring & Transport-- (-1989)
54 ENVIRONMENTAL SCIENCES
AUTOMOBILES
CATALYTIC CONVERTERS
ENVIRONMENTAL EFFECTS
EQUIPMENT
EXHAUST GASES
GASEOUS WASTES
HYDROGEN COMPOUNDS
INORGANIC ACIDS
MONITORING
OXYGEN COMPOUNDS
POLLUTION CONTROL EQUIPMENT
SULFATES
SULFUR COMPOUNDS
SULFURIC ACID
VEHICLES
WASTES