PUBHLTH 1 Lecture Notes - Lecture 28: Clean Air Act (United States), Sulfur Dioxide, Air Pollution
Document Summary
Requires monitoring & regulation of six common air pollutants. Known to be harmful to health & the environment. First is london, cool moist air hovered in the city for 5 days trapped air from auto mobiles/ factories (many died from respiratory disease and cardiovascular disease. Lung cancer/diseases & heart disease proportional to pm2. 5. Acid rain (reacts with water vapors forming acid rain) Interferes with oxygen carrying capacity of the blood. Sources: on-road vehicle exhaust & power plant emissions. Produced by sunlight acting on other air pollutants. Catalytic converters limit air pollution from automobiles reduced carbon monoxide & ozone producing chemicals by 90% reduced nitrogen oxides by 70% Point-source pollution = pollutants that are directly discharged into lakes and rivers (1972 & 1977) Non-point source pollution = pollution discharged into lakes and rivers indirectly (1987) Sources: stormwater runoff, construction sites, & urban streets. Source: from rivers & lakes (in the u. s) and from aquifers.
