ENV100Y5 Lecture Notes - Lecture 44: Ozone Depletion, Iron Sulfide, Chlorine

• School: UTM
• Department: Environment
• Course: ENV100Y5
• Professor: Monika Havelka

Document Summary

Acid deposition is also known as acid rain. The primary pollutants are generated in one place and the impacts are felt somewhere else. Deposition can occur by any number of mechanisms (i. e: rain (wet deposition), dry particles on land or in the form of snow or fog) The big nickel (sudbury) didn"t have lots of attention in the 70s. There was lots of sulphur dioxide coming out. If you burned or smelled something that had lots of iron sulphide, the sulphur oxide would be released in the atmosphere. Sudbury used to have lots of dead vegetation and acidic deposition. They installed a huge super stack so everything can be dispersed further away. Natural rain is not neutral -- it"ll show up as slightly acidic, even if it"s not polluted. This is why rain water is good at dissolving things. Limestone in old cemeteries cannot be read anymore (because the natural rain dissolved the limestone on the head stones)