ENVS 1126 Lecture Notes - Lecture 33: Persistent Organic Pollutant, Occidental Petroleum, Hair Spray
25 Nov 2016
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Document Summary
Toxicology and chemical hazards: toxicology: the study of the harmful effects of chemicals on human and environmental health. Acute effects: immediate reaction to a chemical following exposure. Chronic effects: reaction to a chemical following exposure over a time scale of years: persistent organic pollutants (pops) How do chemicals get into the environment anyway: hair spray, pesticides, fertilizers, road salts, paints, adhesives, solvents, coal products, gasoline, oil, antifreeze, carwash soap, lubricants, cleaning fluids, and all the byproducts that go into making them. Methods of land disposal: deep-well injection, surface impoundments, landfills. Deep-well injection: inject the wastes deep and eventually they will react with naturally occurring material to neutralize them. Surface impoundments: waste is discharged into a lined pond, solid waste settles, water evaporates, and the layers continue: landfills: hazmat are treated to stabilize and neutralize and are deposited in landfills in drums.
