Lecture_2_Air - TAs (office SW511A) Wang, Victoria (A C)...

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Unformatted text preview: TAs (office SW511A) Wang, Victoria (A C) Nehal El-Hadi (D - I) Tat, Cindy (J - L) Jien, Jerry (M R) Das, Smriti (S Z) (A Z first letter of the student's last name) Airborne Hazards and Human Health Case study 1: London smog, 1952 A man guides a London bus through thick fog with a flaming torch during the 1952 Great Smog The smog was the result of coal burning The Relationship Between Smoke And Sulfur Dioxide Pollution And Deaths During The Great London Smog, December 1952, Source: Wilkins, 1954 Figure shows the average smoke and sulphur dioxide levels for 12 London sites and the relationship with deaths recorded during the smog period in December 1952. The peak in the number of deaths coincided with the peak in both smoke and sulphur dioxide pollution levels. Case study 2: Indonesian Fires, 1997 Fire damage classification of the 1997-1998 fires in East Kalimantan, Indonesia, based on ERS-SAR images. Smoke over Lake Toba, Sumatra, Indonesia, photographed by the Space Shuttle Atlantis . Smoke from fires set to clear land for agriculture in Indonesia at one time in 1997 blanketed an area larger than the continental United States. Airborne Hazards Outdoor air pollution Indoor air pollution Outdoor air pollution Human sources- stationary Human sources- mobile Natural sources Health effects of Outdoor Air Pollution The effects depend on the dose or concentration Primary effects: Toxic poisoning Cancer Birth defects Eye irritation Irritation of the respiratory system Increased susceptibility to heart disease Aggravation of chronic diseases such as asthma and emphysema Seven Common Outdoor Air Pollutants Primary air pollutants Particulate matter Carbon monoxide Nitrogen oxides Sulphur oxides VOC (Volatile Organic Compounds) Lead Secondary air pollutant Ground level Ozone Early Morning Fog Shots in Toronto Particulate matter (PM 10 and PM 2.5 ) Particles found in the air (dust, soot, smoke, and liquid droplets) Big and small Vehicles, factories, construction sites, tilled fields, stone crashing, burning Some formed in the air Serious health effects Carbon Monoxide Odourless, colourless gas Incomplete burning of carbon containing fuels Heaters, woodstoves, gas stoves, fireplaces, water heaters, automobile exhaust, tobacco smoke...
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This note was uploaded on 04/09/2011 for the course ENVIRONMEN EESA10 taught by Professor Silvajastovenovij during the Spring '11 term at University of Toronto- Toronto.

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Lecture_2_Air - TAs (office SW511A) Wang, Victoria (A C)...

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