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Measurements of Unregulated Emissions from General Motors' Light-Duty Vehicles
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Abstract
Sampling and analysis methods for unregulated exhaust constituents are discussed. Emission results for more than fifteen exhaust constituents from both gasoline- and diesel-powered automobiles are presented. It is shown that the catalytic converter substantially lowers the emission rates of aldehydes, benzene, benzo(a)-pyrene, hydrogen cyanide, and nitrogen dioxide. However, under certain rich-malfunction conditions, small increases in hydrogen sulfide, carbonyl sulfide, hydrogen cyanide, and ammonia occur. Particulate emissions are the primary concern for diesels since other unregulated emissions occur at the same low levels as from gasoline-powered vehicles. It is concluded that although steady improvements in chemical analysis technology have led to the detection of more and more minor impurities in exhaust, none of these substances are emitted at concentrations that can be considered dangerous.
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Authors
- Steven H. Cadle - Environmental Science Department General Motors Research Laboratories Warren, Michigan 48090
- George J. Nebel - Environmental Science Department General Motors Research Laboratories Warren, Michigan 48090
- Ronald L. Williams - Environmental Science Department General Motors Research Laboratories Warren, Michigan 48090
Citation
Cadle, S., Nebel, G., and Williams, R., "Measurements of Unregulated Emissions from General Motors' Light-Duty Vehicles," SAE Technical Paper 790694, 1979, https://doi.org/10.4271/790694.Also In
References
- Sawicki E. Hauser T. R. Stanley T. W. Elbert W. “The 3-Methyl 2-Benzothiazolone Hydrazone Test,” Anal. Chem. 33 93 1961
- Dahlgren G. “Spectrophotometric Determination of Ethyl, Diethyl, and Triethylamine in Aqueous Solution,” Anal. Chem. 36 596 1964
- Axelrod H. D. Greenberg J. P. Atmos. Environ. 10 495 1976
- Sawicki E. Mulek J. D. Wittgenstein E. “Ion Chromatographic Analysis of Environmental Pollutants,” Ann Arbor Science Publishing Ann Arbor, MI 1978
- Jackson M. W. “Effect of Catalytic Emission Control on Exhaust Hydrocarbon Composition and Reactivity,” SAE Paper 780624 Troy, MI June 5-9 1978
- Cadle S. H. Mulawa P. A. “Sulfide Emissions from Catalyst-Equipped Cars,” SAE Paper 780200 Detroit, MI Feb. 27 March 3 1978
- Hanson N. W. Reilly D. A. Stagg H. E. “The Determination of Toxic Substances in Air,” W. Heffer & Sons, Ltd. Cambridge, England 1965 139
- Aldridge W. N. “A New Method for the Determination of Micro Quantities of Cyanide and Thiocyanate,” Analyst 69 262 1944
- Intersociety Committee “Methods of Air Sampling and Analysis,” Amer. Public Health Assoc. Washington, DC 1972
- Kincaid J. F. Stanley E. L. Beckworth C. H. Sunderman F. W. “Nickel Poisoning, III, Procedures for the Detection, Prevention, and Treatment of Nickel Carbonyl Exposure Including a Method for the Determination of Nickel in Biological Materials,” Amer. J. Clin. Pathol. 26 107 1956
- Price M. A. Stephens E. R. “Analysis of Gas-Phase Inorganic Nitrate,” 10th Conf. on Methods in Air Pollution and Industrial Hygiene Studies San Francisco, CA Feb. 19-21 1969
- Rasmussen R. A. Krasnic J. Pierotti D. “N 2 O Analysis in the Atmosphere via Electron Capture Gas Chromatography,” Geophys. Res. Letters 3 610 1976
- Hochheiser S. “Determination of Sulfur Dioxide: Hydrogen Peroxide Method,” “Selected Methods for the Measurement of Air Pollutants,” U.S. Public Health Service Cincinnati, OH May 1965
- Groblicki P. J. “General Motors Sulfate Dispersion Experiment: Aerosol Sizing Measurements,” EPA Symposium on The General Motors Sulfate Dispersion Experiment Research Triangle Park, NC April 12 1976
- Groblicki P. J. Begeman C. R. “Particle Size Variation in Diesel Car Exhaust,” SAE Paper 790421 Detroit, MI Feb. 26 March 2 1979
- Schreck R. M. McGrath J. J. Swarin S. J. Hering W. E. Groblicki P. J. MacDonald J. S. “Characterization of Diesel Exhaust Particulate for Mutagenic Testing,” APCA Paper 78-33.5 Houston, TX June 26-29 1978
- Williams R. L. Swarin S. J. “Benzo(a)pyrene Emissions from Gasoline and Diesel Automobiles,” SAE Paper 790419 Detroit, MI Feb. 26 March 2 1979
- Williams R. L. Begeman C. R. “Characterization of Exhaust Particulate Matter from Diesel Automobiles,” 17th Annual Purdue Air Quality Conf. West Lafayette, IN May 1979
- Begeman C. R. Jackson M. W. Nebel G. J. “Sulfate Emissions from Catalyst-Equipped Automobiles,” SAE Paper 741060 Toronto, Ontario, Canada Oct. 21-25 1974
- Campbell K. “Exhaust Gas Filter Systems: A Situation Report, March 1977.” The Associated Octel Company, Ltd. Milton Keynes, MK1 1EZ England
- Das B. S. Thomas G. H. “Fluorescence Detection in High-Performance Liquid Chromatographic Determination of Polycyclic Aromatic Hydrocarbons,” Anal. Chem. 50 967 1978
- Colucci J. H. Begeman C. R. “Polynuclear Aromatic Hydrocarbons and Other Pollutants in Los Angeles Air,” “Proceedings of the Second International Clean Air Congress,” Academic Press New York 1971 28
- Chock D. P. “The General Motors Sulfate Dispersion Experiment: Assessment of the EPA HIWAY Model,” J. Air Pollut. Control Assoc. 27 39 1977
- Chock D. P. “A Simple Line-Source Model for Dispersion Near Roadways,” Atmos. Environ. 12 823 1978
- Chock D. P. “An Advection-Diffusion Model for Pollutant Dispersion Near Roadways,” J. Appl. Meteor. 17 976 1978
- Fritz J. S. Yamamura S. S. “Rapid Microtitration of Sulfate,” Anal. Chem. 27 1461 1955
- Pierotti D. Rasmussen R. A. “Combustion as a Source of Nitrous Oxide for the Atmosphere,” Geophys. Res. Letters 3 265 1976
- Cicerone R. J. “Gas Chromatographic Measurements of Atmospheric N 2 O,” JPL publication 77-12 57
- Bradow R. L. Stump F. D. “Unregulated Emissions from Three-Way Catalyst Cars,” SAE Paper 770369 Detroit, MI Feb. 28 March 4 1977
- Keirns M. H. Holt E. L. “Hydrogen Cyanide Emissions from Three-Way Catalyst Prototypes Under Malfunctioning Conditions,” SAE Paper 780201 Detroit, MI Feb. 27 March 3 1978
- Pellizzari E. D. “The Measurement of Carcinogenic Vapors in Ambient Atmospheres,” Environmental Science Research Laboratory, EPA Research Triangle Park, NC EPA Report 600/7-77-055
- Shapley D. “Nitrosamines: Scientists on the Trail of Prime Suspect in Urban Cancer,” Science 191 268 1976
- Brief R. S. Venable F. S. Ajemian R. S. “Nickel Carbonyl: Its Determination and Potential for Formation,” Amer. Ind. Hyg. Assoc. J. 26 72 1965