DISSEMINATION |
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Item | Description |
Air pollutant |
A substance, gaseous material or aerosol which has been introduced into the air (either by human activity or by natural processes) in sufficient concentration to produce a measurable effect on humans, animals, vegetation, or materials (monuments, etc.): SO2, NO2, H2S, CO, hydrocarbons, etc.
Source: International Union of Pure And Applied Chemistry - Chemistry and Environment Division - Commission on Atmospheric Chemistry |