Lecture 9 - Water Pollution

Lecture 9 Water - Common Pollutants Toxic waste Synthetic organic chemicals up to 100,000 chemicals in use especially those POPs(persistent organic

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Toxic waste Synthetic organic chemicals, up to 100,000 chemicals in use, especially those POPs (persistent organic pollutants) Radioactive materials Common Pollutants
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Common Pollutants
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Toxic waste Heavy metals: Pb, Hg, Zn, Cd—e.g., lead contamination Common Pollutants
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Sediment pollution Sand and smaller particles Polluted streams, lakes, reservoirs, even ocean water Major sources: Soil erosion, dust storms, floods, and mudflows Greatest water pollutant by volume Common Pollutants
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Thermal pollution Temperature increases water is able to carry less dissolved oxygen Adverse changes to the habitats of organisms Economic impacts Major sources: Hot-water discharge from industrial operations, power plants, abnormal ocean currents Common Pollutants
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MCLs Maximum Contaminant Levels Permissible limits for 83 contaminants MCLGs Maximum Contaminant Level Goals The maximum level at which no adverse health effects from a lifelong exposure
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This note was uploaded on 02/02/2010 for the course GEO 101 taught by Professor Hanson during the Fall '08 term at SUNY Stony Brook.

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Lecture 9 Water - Common Pollutants Toxic waste Synthetic organic chemicals up to 100,000 chemicals in use especially those POPs(persistent organic

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