How many classifications of air contaminants are recognized?

The classification of air contaminants is essential for understanding how to manage air quality effectively and the methods used to filter and control different types of pollutants. There are four recognized classifications of air contaminants: particulate matter, biological contaminants, chemical gases, and vapors. Each classification represents a different type of contaminant that can affect air quality and human health.

Particulate matter includes solid or liquid particles suspended in the air, such as dust, smoke, and aerosols. Biological contaminants encompass living organisms or their by-products, like bacteria, mold spores, and pollen. Chemical gases refer to gaseous substances that can stem from various sources, including industrial emissions and vehicular exhaust, which can have harmful effects on respiratory health. Finally, vapors, often produced from liquids, include fumes from solvents, paints, and chemicals that can contribute to indoor air pollution.

Recognizing these four classifications aids in selecting the proper air filtration systems and improvements in indoor air quality management, ensuring a safer environment.