- 行业: Government
- Number of terms: 3992
- Number of blossaries: 2
- Company Profile:
Particles that are directly emitted from combustion and fugitive dust sources. (Compare with Secondary Particle. )
Industry:Pollution control
Particles that are formed in the atmosphere. Secondary particles are products of the chemical reactions between gases, such as nitrates, sulfur oxides, ammonia, and organic products.
Industry:Pollution control
Permission granted for a limited time (under stated conditions) for a person or company to operate outside the limits prescribed in a regulation.
Industry:Pollution control
Pollutants emitted by a variety of non-road sources such as farm and construction equipment, gasoline-powered lawn and garden equipment, and power boats and outboard motors. For more information, please see our offroad website.
Industry:Pollution control
Pollution control device that collects particles from an air stream. (See Electrostatic Precipitator. )
Industry:Pollution control
Precursor of ozone, NO<sub>2</sub>, and nitrate; nitric oxide is usually emitted from combustion processes. Nitric oxide is converted to nitrogen dioxide (NO<sub>2</sub>) in the atmosphere, and then becomes involved in the photochemical processes and / or particulate formation. (See Nitrogen Oxides. )
Industry:Pollution control
Primarily a combination of sidestream smoke from the burning end of a cigarette, pipe or cigar, and exhaled mainstream smoke from the smoker. Other components include smoke emitted at the mouthpiece during puff drawing. For more information, please see our environmental tobacco smoke website.
Industry:Pollution control
Long-term exposure, usually lasting one year to a lifetime.
Industry:Pollution control
Mandated by AB 1807, this nine-member panel advises the ARB, OEHHA, and the California Department of Pesticide Regulation on the scientific adequacy of the risk assessment portion of reports issued by those three agencies in the process of identifying substances as toxic air contaminants. For more information, please go to our SRP website.
Industry:Pollution control
Measurement or estimation of the magnitude, frequency, duration and route of exposure to a substance for the populations of interest.
Industry:Pollution control
