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Formation and control of nitrogen-containing air pollutants. Final report, June 1983-April 1987

Technical Report ·
OSTI ID:7145268
;

This work focuses on the formation, transport, and control of nitrogen-containing air pollutants. Particular attention is paid to the problem of understanding how to control atmospheric-aerosol nitrate and nitric acid concentrations. In the course of the study, additional insights are gained into the effects of emission controls on other co-pollutants, including NO/sub 2/, O/sub 3/, PAN and ammonia. Computer-based theoretical models are employed that relate emissions of reactive organic gases, oxides of nitrogen and ammonia to downwind pollutant concentrations. Both trajectory models that follow the path of a single air parcel and grid models that examine an entire air basin are used. The trajectory version of the atmospheric model is used extensively to test the new features of the chemical mechanism that is built into these models. Nighttime atmospheric chemical reactions that can lead to nitric acid formation are examined, and are found to produce significant amounts of HNO/sub 3/. The hypothesis that atmospheric HNO/sub 3/ and NH/sub 3/ are in equilibrium with the aerosol phase is tested, and found to be a useful basis for predicting the ambient HNO/sub 3/ and NH/sub 3/ levels.

Research Organization:
California Inst. of Tech., Pasadena (USA). Environmental Quality Lab.
OSTI ID:
7145268
Report Number(s):
PB-88-190632/XAB; EQL-24
Country of Publication:
United States
Language:
English

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Related Subjects

500200* -- Environment
Atmospheric-- Chemicals Monitoring & Transport-- (-1989)
54 ENVIRONMENTAL SCIENCES
AEROSOLS
AIR POLLUTION
AIR POLLUTION CONTROL
AIR QUALITY
AMMONIA
AROMATICS
AZINES
CALIFORNIA
CHALCOGENIDES
COLLOIDS
CONTROL
DIAZO COMPOUNDS
DISPERSIONS
DOCUMENT TYPES
ELEMENTS
ENVIRONMENTAL QUALITY
FEDERAL REGION IX
HETEROCYCLIC COMPOUNDS
HYDRIDES
HYDROCARBONS
HYDROGEN COMPOUNDS
HYDROXY COMPOUNDS
INORGANIC ACIDS
LOS ANGELES
MATHEMATICAL MODELS
NAPHTHOLS
NITRIC ACID
NITROGEN
NITROGEN COMPOUNDS
NITROGEN HYDRIDES
NITROGEN OXIDES
NONMETALS
NORTH AMERICA
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
OZONE
PAN
PHENOLS
POLLUTION
POLLUTION ABATEMENT
POLLUTION CONTROL
PROGRESS REPORT
PYRIDINES
SMOG
SOLS
SULFATES
SULFUR COMPOUNDS
USA