APES Indoor Air pollutants

Carbon Monoxide Source

Incomplete combustion of fuel (e.g., gas heaters, car exhaust in garages, fireplaces)

Carbon Monoxide Impact

* Binds to hemoglobin, reducing oxygen delivery in the body; can be fatal in high concentrations

Radon Source

* Natural radioactive decay of uranium in soil and rock; seeps into buildings through cracks in foundations

Radon Impact

* Long-term exposure increases risk of lung cancer; second leading cause of lung cancer in the U.S.

Asbestos Source

* Found in insulation materials, floor tiles, and roofing in older buildings

Asbestos Impact

* Fibers can cause lung irritation, asbestosis, and mesothelioma (a type of lung cancer)

Formaldehyde Source

* Emitted from building materials, pressed wood products, glues, and some textiles

Formaldehyde Impact

* Causes eye, nose, and throat irritation; can trigger asthma and is a probable human carcinogen

VOCS source

* Emitted from paints, cleaners, air fresheners, pesticides, and furnishings

VOCS effect

* Can cause headaches, nausea, liver/kidney damage, and are suspected carcinogens