EVS 1101 Lecture Notes - Lecture 8: Lightning, Coral Bleaching, Vale Limited
5 Feb 2017
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Point sources (waste disposal, sewage, mine tailings) (leaks and spills from pipelines, manufacturing facilities, etc) Physical transport/advection= bulk movement of water/ air. Flux density (j) = rate at which a chemical is transported by unit area. Acid rain= when you have sulpher dioxide and nox and their oxidation products are in the atmosphere. Increase in concentration of h+ protons (ph = -log (h+)) Main acidifying species are returned to the earth through wet deposition (snow/rain) Can move up to 50 km away from the site of contamination. Normal unpolluted rain is flightly acidic and the ph is around 5. 6. Due to the equilibrium between co2 and h2o. Dorset acid rain in northern ontario, have rain at 4. 7 ph. Classified as rain with a ph of less than 5. 6. Susceptibility of a certain body of water depending on its ability to buffer/neutralize the acidity. Bedrock in ottawa is bicarbonate, h+ is neutralized by bicarbonate in the water.
