Why are ozone concentrations higher in rural areas than in cities? — English
So the air just cooks and ozone levels can build up,” said Loretta J. Mickley, a co- author of the study. Pictured is the smog that sometimes. Components of Photochemical Smog; Why High Levels of Ozone in the Air are of the connection between chemical and electrical energy, and redox reactions. Smog is a mixture of pollutants including nitrogen oxides, ozone, aldehydes. High concentrations of ozone near ground level can be harmful to a summertime pollutant and a chief component of summertime smog.
Once ozone is formed, I can introduce one of those ingredients and we can see the smog. Ok, I guess we have probably enough ozone in there. Now we need to add Nitrogen oxides and volatile organic compounds to form the photochemical smog that we are seeing or that we should be seeing. So what I am doing is hydro carbons and Nitrogen oxide, cause even is nitrogen oxides are not there, we can form photochemical smog if we have hydro carbons.
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The composition will be slightly different. So now I am taking my orange, this is the orange, and you know the beautiful smell that you normally smell with an orange is because of linolenic acid. Linolenic acid is the orange smell that you get. And this ozone that is there inside will slowly react with this hydrocarbon that are produced, that are emitted from this orange peel and produce the photochemical smog.
Do you see anything going on here?
Are you able to still see through the beaker? Is the atmosphere clear in the beaker or is it becoming hazy? Can you see anything coming out of this?
That is the photochemical smog actually. Let me open this and show you. That is the smog that you see and when the smog or when this smoke kind of smog is in the beaker or in the atmosphere, you can not see through and since this has ozone in it, it is not good for our health.
Ground-level Ozone Basics
When you live in cities filled with this kind of smog, you generally experience breathing problems and other health problems. Your eyes start to water when you drive home from work late in the afternoon or your nose starts to run because your body tries to get rid of, get rid of these pollutants. So that is photochemical smog and if we keep this orange peel like this we probably can generate enough smog for about 24 hours to 36 hours like this, with this little orange peel.
Now you can see what we are doing to the atmosphere by emitting roughly 10, 12, 13 million tons of nitrogen oxides into the atmosphere and several million tons of volatile organic compounds into the atmosphere.
As previously mentioned, the formation of ozone is mainly from automobile emission. A typical profile of pollutants in the air of major cities is well repeatable and is shown in the figure below. Note how the formation changes over the course of a day: Mid-morning - NO is slowly oxidized to NO2.Photochemical Smog (Air Pollution) + Related Situation of DELHI most imp. lecture of General Science
Called stratospheric ozone, good ozone occurs naturally in the upper atmosphere, where it forms a protective layer that shields us from the sun's harmful ultraviolet rays. This beneficial ozone has been partially destroyed by manmade chemicals, causing what is sometimes called a "hole in the ozone.
Ground-level Ozone Basics | Ground-level Ozone Pollution | US EPA
Learn more about stratospheric, or "good" ozone. How does ground-level ozone form? Tropospheric, or ground level ozone, is not emitted directly into the air, but is created by chemical reactions between oxides of nitrogen NOx and volatile organic compounds VOC. This happens when pollutants emitted by cars, power plants, industrial boilers, refineries, chemical plants, and other sources chemically react in the presence of sunlight. Ozone is most likely to reach unhealthy levels on hot sunny days in urban environments, but can still reach high levels during colder months.
Smog - Wikipedia
Ozone can also be transported long distances by wind, so even rural areas can experience high ozone levels. What are the harmful effects of ozone? What are the health effects of ozone?
Ozone in the air we breathe can harm our health. People most at risk from breathing air containing ozone include people with asthma, children, older adults, and people who are active outdoors, especially outdoor workers. In addition, people with certain genetic characteristics, and people with reduced intake of certain nutrients, such as vitamins C and E, are at greater risk from ozone exposure.
Breathing ozone can trigger a variety of health problems including chest pain, coughing, throat irritation, and airway inflammation. It also can reduce lung function and harm lung tissue. Ozone can worsen bronchitis, emphysema, and asthmaleading to increased medical care.
- Why are ozone concentrations higher in rural areas than in cities?
- Ground Level Ozone and Photochemical Smog
Learn more about health effects. What are the environmental effects of ozone? Ozone affects sensitive vegetation and ecosystems, including forests, parks, wildlife refuges and wilderness areas. In particular, ozone harms sensitive vegetation during the growing season. Learn more about how ozone harms ecosystems.
What are the ozone levels in my community?