Photochemical air pollution syndrome
There are two distinct pollution problems in the Los Angeles Basin - one in winter, the other most frequently in summer and fall. In winter the concentrations of carbon monoxide, nitrogen oxides, sulfur dioxide and black filterable aerosols are higher than in summer, but the secondary pollutants such as ozone and photochemical oxidants are not as high. The photochemical air pollution syndrome is due to a pattern set by previous smog attacks. This pattern is due to low wind speeds, low inversion heights, a trajectory to carry the pollution and sufficient sunlight to photodissociate the nitrogen dioxide formed and to form nitric oxide and atomic oxygen. The results are high levels of oxidant or ozone and large quantities of particles. 5 references, 9 figures, 7 tables.
- Research Organization:
- Los Angeles County Air Pollution Control District, CA
- OSTI ID:
- 6047856
- Journal Information:
- Arch. Environ. Health; (United States), Journal Name: Arch. Environ. Health; (United States) Vol. 14; ISSN AEHLA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
Atmospheric-- Chemicals Monitoring & Transport-- (-1989)
54 ENVIRONMENTAL SCIENCES
AEROSOLS
AIR POLLUTION
AIR POLLUTION MONITORING
CALIFORNIA
CARBON COMPOUNDS
CARBON MONOXIDE
CARBON OXIDES
CHALCOGENIDES
CHEMICAL REACTIONS
COLLOIDS
DISPERSIONS
ECOLOGICAL CONCENTRATION
ELECTROMAGNETIC RADIATION
FEDERAL REGION IX
LOS ANGELES
METEOROLOGY
NITROGEN COMPOUNDS
NITROGEN OXIDES
NORTH AMERICA
OXIDES
OXYGEN COMPOUNDS
OZONE
PHOTOCHEMICAL OXIDANTS
PHOTOCHEMICAL REACTIONS
POLLUTION
RADIATIONS
SEASONAL VARIATIONS
SMOG
SOLS
SULFUR COMPOUNDS
SULFUR DIOXIDE
SULFUR OXIDES
TEMPERATURE INVERSIONS
USA
VARIATIONS
VISIBLE RADIATION
WIND