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BackPage Primer from Environmental Building News
February 1, 2008
Good Ozone, Bad Ozone
The oxygen that we breathe consists of pairs of oxygen atoms, or O2. Add another oxygen atom and you get O3, or ozone. Ozone is the primary component of smog. It is created when pollutants such as volatile organic compounds (VOCs) or nitrogen oxides react with oxygen, which is triggered by sunlight and heat. These pollutants come primarily from motor vehicles and factories but also from paints, coatings, and adhesives. Ozone irritates lung tissues and can lead to serious respiratory problems. Since passage of the 1990 Clean Air Act, ozone levels in most major U.S. cities have declined measurably....
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