Air pollutants in the atmosphere
Air pollution solutions
For example, a small child's inhalation rate will be less than that of an adult. Exposure to PM2. Other greenhouse gases include methane —which comes from such sources as landfills, the natural gas industry, and gas emitted by livestock —and chlorofluorocarbons CFCs , which were used in refrigerants and aerosol propellants until they were banned in the late s because of their deteriorating effect on Earth's ozone layer. Short-term effect s, which are temporary, include illnesses such as pneumonia or bronchitis. Sometimes, mountains or tall buildings prevent air pollution from spreading out. Biological sources of air pollution are also found indoors, as gases and airborne particulates. Physico-Chemical Behaviour of Atmospheric Pollutants. That is why ozone is mostly found in the summer. Pollutant Sources Effects Ozone.
In the U. The U. Air pollution can also cause long-term damage to people's nerve s, brain, kidney s, liverand other organs.
Lead researcher Professor Deborah Cory-Slechta said that "When we looked closely at the ventricleswe could see that the white matter that normally surrounds them hadn't fully developed.
A group of 74, pregnant women, in four separate regions of Beijing, were monitored from early pregnancy to delivery along with daily air pollution levels of sulphur Dioxide and TSP along with other particulates.
Air pollutants in the atmosphere
In fact, volcanoes used to be the main source of atmospheric sulfur dioxide; today, people are. Though its use has now been banned in many countries, the extensive use of asbestos in industrial and domestic environments in the past has left a potentially very dangerous material in many localities. Nitrous oxide is a common emission from industrial factories, agriculture, and the burning of fossil fuels in cars. The agency recorded 15 percent more days with unhealthy air in the country in and compared to the average from to Control: Requires International cooperation, but the following might help: a Install sulfur scrubbers in smoke stacks at factories, b Reduce combustion temperature, c Effective legislation 4. In high concentrations it is fatal. Millions of people every day make simple changes in their lives to do this. Sometimes, mountains or tall buildings prevent air pollution from spreading out. Air pollution exposure can be expressed for an individual, for certain groups e. Atmospheric air pollutants Atmospheric pollutants are substances that accumulate in the air to a degree that is harmful to living organisms or to materials exposed to the air. It established standards for air quality for five major pollutants and provides time tables for their achievements. Los Angeles, California, is nicknamed Smog City. The daily exposure, then, needs to reflect the time spent in each micro-environmental setting and the type of activities in these settings.
The estimated reduction in birth weight was 7. Ozone can also hurt plants and crops. Radon Rn gas, a carcinogenis exuded from the Earth in certain locations and trapped inside houses.
In most cases, these factors are simply averages of all available data of acceptable quality, and are generally assumed to be representative of long-term averages.
Solid or liquid matter that is suspended in the air. Usually, more of Earths heat escapes into space. Hutchinson, T. The human health effects of poor air quality are far reaching, but principally affect the body's respiratory system and the cardiovascular system.
based on 90 review