 Types of pollution caused by the Japan’s Tsunami: › Water pollution  Soil Contaminants and physical contaminants;  Oil spills; › Nuclear pollution.

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Water Pollution.

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Presentation transcript:

 Types of pollution caused by the Japan’s Tsunami: › Water pollution  Soil Contaminants and physical contaminants;  Oil spills; › Nuclear pollution

 A worldwide contamination (developed countries) of the ocean water are due to land runoff, bringing contaminants into the water, such as chemical fertilizers, detergents, sewage, herbicides, etc.

› Nitrogen-rich fertilizers increase algae when flowed into the ocean. This latter robs the oxygen from the water causing no marine life possible. › Everything comes back into the food chain, where we end up consuming ourselves.

 Other common pollutants would be solid wastes such as plastic bags, and other solid items dumped in to the oceans where aquatic animals mistake them as food.

 Oil spills (in this case) is due to immersion and damages of cars and boats. › Possible of light oil and heavy oil spills:  Light oil: highly flammable, highly toxic, evaporates quickly  Heavy oil: less toxic, but high life span over water. Hardens on shore coasts, can suffocate aquatic life in water

 This video showing the water washing everything away, but also how people were trying to reach to higher grounds  ay#p/u/60/vC0OFT8WWHk ay#p/u/60/vC0OFT8WWHk

 Iodine 129 and Iodine 131 › Thyroid constantly absorbs iodine › Cannot tell apart from radioactive and nonradiactive iodine  Prevention: › Raise concentration of stable iodine in blood › Iodized table salt is useful to maintain health, but strong but NOT anti-radiation! › Excess or too little is not good for health:  Thyroid disease

 Cesium 137 › Increase risk of cancer › Higher concentration in muscles than in bone and fat › Decay time: years  Prevention: › Cesium in environment cannot be avoided › Remains short time in body and eliminated through urine.

 Contamination of the air: › Forced up to higher atmosphere, particles would be carried around by the jet stream  Contamination of the ecosystems: › Iodine -131 (through milk, accumulated in thyroid)  Farm in Hitachi, 27 times higher than acceptable  Dairy farm in Iitate, 18 times higher than acceptable

› Cesium 137 (damage cells, increase risk of cancer)  4 times higher than normal  Human contamination: › Over exposure to radioactive environment › Human body a walking contamination

› fects-of-oil-spills.html fects-of-oil-spills.html › spills-affect-ocean.html spills-affect-ocean.html

› oil-spills-affect-animals_.html oil-spills-affect-animals_.html › Soil pollutants: an/critical-issues-marine-pollution/ an/critical-issues-marine-pollution/ › Nuclear contamination: asia/21japan.html?_r=1&pagewanted=2 asia/21japan.html?_r=1&pagewanted=2