| Pollutant - Description - Source - Effects CO Colorless, odorless gas – comes from fuel combustion Cigarettes, fossil fuels -carbmonoxyhemoglobin - heart attacks -damage to fetus -emphysema NO2 Reddish-brown gas (smog) – becomes acid rain Fossil fuels, power plants -lung irritant -respiratory infections -acid rain -corrodes metals, fabrics SO2 Colorless – leads to acid rain Fossil fuels (primarily coal), industry -breathing problems -bronchitis -acid rain SPM (suspended particulate matter) Aerosols (smoke, dust, haze, pollen, soot, SO4, NO3 particles) Fossil fuels, agriculture, construction, dirt roads -breathing problems -bronchitis -mutations - reproductive problems -cancer (lead, cadmium, PCBs, dioxins) -acid rain O3 Highly reactive irritating gas Chemical reactions with VOC’s & NOx’s to form smog - breathing problems -aggravates asthma, heart problems - decreases disease resistance in the respiratory system -damages trees, rubber, fabrics Pb Solid particle Paint, smelters, battery terminals, old lead-based gas -Nervous system damage - Cancer |