STB-2.E—Identify indoor air pollutants

Identify indoor air pollutants.

• Carbon monoxide is an indoor air pollutant that is classified as an asphyxiant.
• Indoor air pollutants that are classified as particulates include asbestos, dust, and smoke.
• Indoor air pollutants can come from natural sources, human-made sources, and combustion.
• Common natural source indoor air pollutants include radon, mold, and dust.
• Common human-made indoor air pollutants include insulation, Volatile Organic Compounds (VOCs) from furniture, paneling and carpets; formaldehyde from building materials, furniture, upholstery, and carpeting; and lead from paints.
• Common combustion air pollutants include carbon monoxide, nitrogen oxides, sulfur dioxide, particulates, and tobacco smoke.
• Radon-222 is a naturally occurring radioactive gas that is produced by the decay of uranium found in some rocks and soils.
• Enduring understanding STB-2: Human activities have physical, chemical, and biological consequences for the atmosphere.