Mention gaseous air pollutants. Discusss any two pollutants out of those in terms of their origin and effect.
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A variety of gaseous pollutants in indoor air, emitted from indoor sources or brought into the building with outdoor air, pose risks to health or may affect perceived air quality. Examples include various volatile organic compounds, ozone, nitrogen dioxide, carbon monoxide,etc.
Carbon monoxide (CO)—a colorless, odorless, tasteless, and toxic air pollutant—is produced in the incomplete combustion of carbon-containing fuels, such as gasoline, natural gas, oil, coal, and wood. The largest anthropogenic source of CO in the United States is vehicle emissions.
It reacts easily with other substances to form harmful compounds, such as sulfuric acid, sulfurous acid and sulfate particles. About 99% of the sulfur dioxide in air comes from human sources.In addition, industrial activities that burn fossil fuels containing sulfur can be important sources of sulfur dioxide.
Carbon monoxide (CO)—a colorless, odorless, tasteless, and toxic air pollutant—is produced in the incomplete combustion of carbon-containing fuels, such as gasoline, natural gas, oil, coal, and wood. The largest anthropogenic source of CO in the United States is vehicle emissions.
It reacts easily with other substances to form harmful compounds, such as sulfuric acid, sulfurous acid and sulfate particles. About 99% of the sulfur dioxide in air comes from human sources.In addition, industrial activities that burn fossil fuels containing sulfur can be important sources of sulfur dioxide.
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