Air (Air) is a combination of several types of gases resulting from. Fresh air, there is no color, no smell and no major ingredients by volume nitrogen 78.09% oxygen, i.e. number of 20.94 percent inert gas, most of which are as follows: 0.93 percent argon, carbon dioxide gas. 0.03 per cent and gas, helium, hydrogen, neon, a mixture of Xenon and ozone, methane vapor poton Church and something else together 0.01 percent.Atmosphere (Atmosphere) is the mass of gas that wrapped up from the surface world until approximately 900 km, is born, together with the other physical characteristics are: temperature, air pressure, humidity. Wind and dust particles or the pollution substance (Pollutant), which is low and remain with the gravity of the Earth. Approximately 80 kms. ambience higher, there is a mixture of gases. People in different places, thus removing the air breathed by no abnormal feeling.The importance of air and the atmosphere. 1. is the gas that is essential for human life. Animals and plants.2. influencing the occurrence of quantity and quality of other resources, such as forests and minerals causing wind and rain.3. adjust the temperature of the Earth. Especially water vapor and carbon dioxide, which prevents the loss of heat from the ground. Make a difference in temperature between night and day, with summer, with winter not very different and makes the surface area of the world with warmth.4. affect the livelihood The condition of the human mind and body. If the weather is not suitable, such as drought or cold too, people will be living with difficulty.5. help prevent danger from the Sun's rays by ozone in the atmosphere absorbs ultraviolet rays to be filtered, or which make the skin burn, scorched skin cancer and cataracts.6. helps burn an object falling from the sky, or a meteor, a tiny particle is not harmful to humans and property.Air pollution sources.The source of the human being.1) transportation The car is considered to be an important reason underlying the causes of air pollution. Especially in the big cities, the car runs a lot and there is a traffic jam, such as New York, Tokyo, Los Angeles, as well as Bangkok, Thailand, etc. Pollutants to vent exhaust is dangerous, and there was plenty of that to come from burns that occur within the engine include hydrocarbons compounds such as daen. The substance a hydrocarbon matik-Rosa Nitric oxide and nitrogen dioxide carbon gases, including carbon dioxide (CO2)2) combustion of fuel in the House. Burning is the process that is necessary to sustain human life. Doing daily activities within the home. The fuel is burnt to heat energy used for cooking food such as benefits. Heating in the House, etc., which burns fuel, it may cause many types of unwanted gases such as carbon dioxide (CO2) Nitrogen dioxide Hi rakha chrome compounds and particle pollution each bond, such as smoke, etc.3) industrial oil refining industry, chemical industry, such as industry, food production, etc, causing the impurities in the air is different, both quantity and quality. In General, the industry is considered to be the birthplace of an important air pollution. Air pollutants from factories, including most of the dust. Carbon particles, smoke, sulphur dioxide Carbon dioxide Toxic gas nitrogen oxide gas, and several others.4) power plant. The power plant will be able to export electricity available. Need to burn fuels such as fuel oil Different types of coal and other fuels to produce thermal energy to be used in the next generation of electricity. The burning of these fuels causes air pollutants like sulphur dioxide. Gas, nitrogen oxide and particle contamination.5) from waste and sewage in the municipal or community whose population is some massively, which could also be waste disposal by incineration. In addition, in various industries, including trade, Affairs, Affairs of State, they have to waste on a regular basis in their own affairs. Incinerator, either will cause any air pollutants due to the burning of waste, including compounds nitrogen oxide hyper-code rakhapon. Oxide of sulphur, carbon, and carbon dioxide, etc.2. naturally occurring sources.Natural phenomenon that occurs. Contribute to air pollution cause are as follows:Volcanic bombs when 1) proof of volcanic ashes and smoke is being discharged into the atmosphere a lot. Which of these substances may have particle drift to a thousand feet high and remain in the air for a long time, counting the wings that they fall back down to Earth.2. the pollution from soil particles), the wind and the storm can blow pollution particles removed from the convection surface hanging up floating in the atmosphere. Especially if the surface is not catch condensation, such as clay that had just passed the Harrow plough. Soil without trees cover or other distractions, such as the soil, it can run. Particles from the soil into the atmosphere, the wind blows, was taking it easy.The decomposition of organic compounds generally 3) decay and break. Organic objects that are left behind, or piles, such as animal carcasses waste scraps, etc. will be degrade by bacteria in the soil. Some of this bacteria, digestion, gas, ammonia (NH3), sulfur dioxide, which has the smell is bothering those living nearby.
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