| Abstract: The study of aerosols in indoor air and the assessment of human exposure to aerosols are relatively recent activities.^The terms indoor air and exposure assessment refer primarily to nonindustrial settings, such as homes, offices, and public-access buildings (e.g., museums, airport terminals, retail stores).^Although many occupational settings are `indoors`, the aerosol concentrations and constituents, airflow regimes, and turbulence levels pose related, but different, aerosol measurement constraints.^Until recently, it was commonly believed that the quality of indoor air was superior to that of the outdoor (ambient) air nearby.^Several factors have influenced the apparent deterioration of indoor air quality: life-styles have changed; building construction techniques have changed; and people have become more concerned about environmental tobacco smoke (ETS). |
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