airborne concentration


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airborne concentration

The mass of particulate substances or fibers, or the vapor percentage of dissolved pollutants in a specific volume of air. As the concentration increases, the risk of inhalational exposure rises.
See also: concentration
References in periodicals archive ?
measuring the airborne concentrations of incompletely cured isocyanates in the form of oligomers (aerosol) and isocyanate monomer (vapor) when removing recently cured paint by light abrasion (manual sanding).
The bacteria and fungi colonies were counted, and airborne concentrations were reported as colony-forming units per cubic meter of air (CFU/[m.
Although there are significant difficulties in measuring airborne concentrations of most bioaerosols, the health effects associated with exposure to aerosolized bacteria have received less research attention than those associated with exposure to other organic dusts, such as molds and animal allergens.
A new study reveals that as airborne concentrations of fine dust particles climb, so do three blood factors that increase an individual's heart attack risk.
0], increasing airborne concentrations and cleanup costs.
In addition, because of the expected low airborne levels, the use of stationary samplers allowed the use of higher flow rates, thereby increasing sampling efficiency and reducing analytical errors, which may have a greater impact at relatively low airborne concentrations.
For reservoirs in some of the watersheds studied, however, PAHs never peaked and continue to climb--even though airborne concentrations in these regions probably fell during the recent past.
Although significant, none of these drops were nearly as dramatic as the drop in airborne concentrations.
Without ventilation, the 24-hour average airborne concentrations of these VOCs often exceeded the 25 milligrams per cubic meter of air that can cause irritation, headaches, and other symptoms in healthy adults.
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