CFC replacement compounds

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What is acid rain? One of the effects of air pollution and acid rain. In the past two decades, and in some industrial areas of ongoing activities, cars and factories, sulfur jitra mall dioxide and nitrogen dioxide in the air has increased dramatically. These two compounds with oxygen and water vapor in the atmosphere will cause a chemical reaction to form nitric acid and sulfuric acid in it. The acidic particles by wind over long distances and form acid rain falling on the ground. Such precipitation such as snow or rain or fog may also occur. Index Air Pollution If indicators of pollution 100 Assume that the pollutant concentrations according to 100 is an air-standard and the pollutant concentrations less than this is the air quality good or fair, and if it is above 100 indicate an increased concentration of air pollutants is . Air pollution index based on the classification of normal weather, unsafe or unhealthy air, the air is very unhealthy and dangerous weather or crisis is defined. Accordingly, environmental experts believe the air quality indicators are calculated 5 types of air pollutants, including ground level ozone, carbon monoxide, sulfur dioxide, nitrogen dioxide and dust. For each of these cases, environmental protection agencies, to protect the health standard jitra mall has been defined. Emissions of these pollutants by setting measuring about 11 to 13 permanent stations in Tehran's air pollution comes stations round the clock air pollution is measured. The numbers can be obtained as a result of these measures as indicators of air pollution or air quality index is used. Air quality index number using a specific formula to achieve the Citadel is a number jitra mall between 151 to 200 ppm unhealthy air, clean air, and from 51 up to 100 average zero to 100 and this number up to 300 be. Air pollution is dangerous and if you exceed the 400 is in critical condition. In such circumstances, a series of measures to reduce air pollution sources such as school holidays or public jitra mall holidays, followed by smoke from the use of the vehicles are reduced.
Pollution Indoors air pollution at two outdoor air pollution and indoor air pollution, including pollution indoors division pollution is cigarette smoke. Other indoor pollutants including smoke, food, heating, smoke, pollution from vehicles and devices in the workplace, including printers and copy machines, monitors and other devices. In some cases, the package space is outdoor pollution, which can cause allergies, such as to create a mushroom. This report adds to air pollution means a mixture of gases, droplets and particles that reduce the quality of air. In cities, cars, buses, airplanes and construction industries and can cause air pollution. Outside the cities, the dust from the ground by plowing tractors, cars and trucks that drive on dirt or gravel roads, landslides and smoke from forest fires and the fields are air pollution. Another important factor to air pollution in most large cities of ozone in the Earth's surface. Ground jitra mall level ozone is formed when emissions from cars and other devices that use fuel reacts with sunlight, the result is an Ozone gas for a man is toxic. The living conditions of ozone in the air, the brightness of the sun and warm weather, there is more. The Ozone at ground level Nbaydba "good ozone", which is located hundreds of miles above the Earth's upper atmosphere absorbs the sun's harmful UV radiation was wrong. In many cities, automobile exhaust emissions, including carbon jitra mall monoxide can emit nitrogen dioxide, sulfur dioxide, particulate matter, including particles smaller than 10 micrometers, benzene, formaldehyde, Polycyclic Hydrocarbons. In terms of air pollution in Tehran is one of the most polluted cities in the world, "this sentence is familiar with the cold weather every year we hear from officials of the country. Every time officials, the lack of a comprehensive jitra mall law to reduce air pollution woes but with all the rain, cold, or it will be forgotten. well as increased levels of air pollutants related to all areas especially crowded malls and high-traffic centers, or one of air pollutants and carbon monoxide emissions over is permitted., even in an area such as air pollution measurement stations jitra mall Sorkhehesar show elevated levels of contaminants. Meanwhile, researchers at Harvard University, in collaboration with researchers at Brigham University, have published the results of a study that shows the To reduce air pollution in industrial cities can add up to 5 months of age. important results of this study it can be the source of their greatest and most dangerous pollutants for human health, identify. they can be of the budget and facilities, and To combat air pollution are limited, it is important to know which of the negative jitra mall effect of pollutants on human health have limited funds to spend to deal with it
The CFC -113
CFC replacement compounds
They are also not suitable because there is no mechanism for the destruction of these compounds in the troposphere courses
CFC are substances that are hundreds of different consumers. They are virtually non-toxic and flame resistant, do not break down easily. jitra mall Because of this stability, they will remain so for 150 years