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Sulfur dioxide - Wikipedia
Sulfur dioxide (also sulphur dioxide in British English) is the chemical compound with the formula S O 2.It is a toxic gas with a burnt match smell. It is released naturally by volcanic activity and is produced as a by-product of the burning of fossil fuels contaminated with sulfur compounds and copper extraction.
Hawaii volcano: Ash, sulfur dioxide, lava concerns for ...
A plume of ash from the Kilauea volcano rose 12,000 feet into the air before dropping ash on sections of the Big Island of Hawaii, prompting officials Tuesday to warn residents to stay indoors and ...
Air Pollution -- Sulfur Dioxide
Environmental Effects: Sulfur dioxide and nitrogen oxides are the major precursors of acid rain, which has acidified soils, lakes and streams, accelerated corrosion of buildings and monuments, and reduced visibility. Sulfur dioxide also is a major precursor of fine particulate soot, which poses a significant health threat. Sources: Combustion of fuel containing sulfur -- mostly coal and oil.
Sulfur dioxide | chemical compound | Britannica.com
Sulfur dioxide: Sulfur dioxide, (SO2), inorganic compound, a heavy, colourless, poisonous gas. It is produced in huge quantities in intermediate steps of sulfuric acid manufacture. Sulfur dioxide has a pungent, irritating odour, familiar as the smell of a just-struck match. Occurring in nature in volcanic gases
Acid Rain Program - Wikipedia
The Acid Rain Program is a market-based initiative taken by the United States Environmental Protection Agency in an effort to reduce overall atmospheric levels of sulfur dioxide and nitrogen oxides, which cause acid rain. The program is an implementation of emissions trading that primarily targets coal-burning power plants, allowing them to buy and sell emission permits (called "allowances ...
Air Quality Health Advisory Levels. Air quality at Kīlauea is affected by volcanic sulfur dioxide gas (SO 2) and particulate matter (PM 2.5).Unhealthy levels of these pollutants can occur within the park.
Sulfur Dioxide (SO2) Primary Air Quality Standards ...
The Clean Air Act requires EPA to set national ambient air quality standards (NAAQS) for sulfur dioxide and five other pollutants considered harmful to public health and the environment (the other pollutants are ozone, particulate matter, nitrogen dioxide, carbon monoxide, and lead).
Glossary of Terms: S - Physical Geography
Sexual Reproduction Any process of reproduction that does involve the fusion of gametes. Shale Fine grained sedimentary rock composed of lithified clay particles. Shear Stress Stress caused by forces operating parallel to each other but in opposite directions.