sulfur dioxide


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sulfur

 [sul´fer]
a chemical element, atomic number 16, atomic weight 32.064, symbol S. (See Appendix 6.)
sulfur dioxide a colorless, nonflammable gas used as an antioxidant in pharmaceutical preparations; it is also an important air pollutant, irritating the eyes and respiratory tract.
precipitated sulfur a topical scabicide, antiparasitic, antibacterial, antifungal, and keratolytic.
sublimed sulfur a topical scabicide and antiparasitic.

sul·fur di·ox·ide

a colorless, nonflammable gas with a strong, suffocating odor; a powerful reducing agent used to prevent oxidative deterioration of food and medicinal products.
See also: sulfurous acid.
Synonym(s): sulfurous oxide

sulfur di·ox·ide

(SO2) (sŭlfŭr dī-oksīd)
Colorless, nonflammable gas with a strong, suffocating odor; a powerful reducing agent used to prevent oxidative deterioration of food and medicinal products.
References in periodicals archive ?
The DEP proposes that the tax be adjusted according to the amount sulfur dioxide in the fuel.
Because of these variables and the variation in winemaking styles, every winemaker or winemaking text is likely to have a different answer to the question: "how much sulfur dioxide should be added?" This confusion can be frustrating to novice vintners but it illustrates one important point; there are few absolute rules of winemaking and depending on the situation and the type of wine that is being made there are many options.
The investigated concentrations of sulfur dioxide in ambient air, mg/[m.sup.3] is the sum of concentrations obtained by calculating the first and second absorbent dish samples:
The agency reported the sulfur dioxide limit of 0.065 pounds per million BTUs was exceeded with emissions as high as 0.252 pounds per million BTUs.
The country's COD and emissions of sulfur dioxide fell for four consecutive years after the target was set at the beginning of 2006.
16), sulfur dioxide reacts with water vapor in the air to produce sulfuric acid.
As part of a long-range plan to lower chemical oxygen demand (COD) and sulfur dioxide emissions by 10% from 2006 to 2010, the goal for 2006 was to lower COD and sulfur dioxide emissions by 2%.
Completion of the work will eliminate more than 30,000 tons of sulfur dioxide emissions annually by sending 100 percent of the flue gases through the station's desulfurization equipment (scrubbers).
According to PNNL, laboratory researchers have identified the potential for using cryptomelane to trap sulfur dioxide and sulfur trioxide from diesel engine emissions on monolith supports.
They can be emitted directly from diesel engines and wood fires or created indirectly in the atmosphere by the interaction of ammonia, water vapor, and other gases with sulfur dioxide and nitrogen oxide, two pollutants primarily released by industry and cars.
When dust storms pass over industrialized areas, they can pick up sulfur dioxide, an acidic trace gas emitted from industrial facilities and power plants.