Lecture 34 - Lecture 34 Figure 16.01 Indoor Air Pollution...

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Lecture 34 Figure 16.01 Indoor Air Pollution Indoor air quality can be a threat to humans because we spend so much time indoors o Sick building syndrome is a medical term referring to chronic ailments caused by indoor air pollution Indoor air pollutants come from: o Chemical emissions o Combustion o Underground diffusion o Figure 16:15 Radon Radon-222 (half-life = 3.82 days) is a colorless, odorless, tasteless radioactive gas derived from uranium-rich rocks o Unstable radioisotope formed during the decay of uranium-238 to lead- 206 Potentially carcinogenic o Estimated risk comparable to smoking, but little public concern Diffuses into unsealed basements from the surrounding soil Most indoor air pollution, including radon diffusion, can be reduced by increasing building ventilation Radon in TN Associated with Chattanooga Shale Tennessee Radon Program Outdoor Air Pollution Clean Air Act of 1970
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EPA identified principal air pollutants, known as criteria pollutants
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Lecture 34 - Lecture 34 Figure 16.01 Indoor Air Pollution...

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