sulfur acid
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Acid rain — is rain or any other form of precipitation that is unusually acidic. It has harmful effects on plants, aquatic animals, and infastructure. Acid rain is mostly caused by human emissions of sulfur and nitrogen compounds which react in the… … Wikipedia
Sulfur mustard — Sulfur mustard … Wikipedia
Sulfur cycle — Sulfur is one of the constituents of many proteins, vitamins and hormones. It recycles as in other biogeochemical cycles.The essential steps of the sulfur cycle are: * Mineralization of organic sulfur to the inorganic form, hydrogen sulfide:… … Wikipedia
Sulfur monoxide — is a chemical compound with formula sulfuroxygen and CAS number 13827 32 2. It is an unstable species only found in the gas phase where it is in equilibrium with a dimeric form, S2O2 (sometimes called disulfur dioxide) which can be represented as … Wikipedia
Acid sulfate soil — Acid sulfate soils are naturally occurring soils, sediments or organic substrates (e.g. peat) that are formed under waterlogged conditions. These soils contain iron sulfide minerals (predominantly as the mineral pyrite) or their oxidation… … Wikipedia
Acid-free paper — is paper that has a neutral or basic pH (7 or slightly greater). It addresses the problem of preserving documents for long periods. Overview Paper made from wood based pulp that has not had its lignin removed goes yellow and deteriorates over… … Wikipedia
sulfur — [sul′fər] n. [ME sulphur < L] 1. a pale yellow, nonmetallic chemical element found in crystalline or amorphous form: it burns with a blue flame and a stifling odor and is used in vulcanizing rubber and in making matches, paper, gunpowder,… … English World dictionary
Acid gas — is natural gas or any other gas mixture which contains significant amounts of hydrogen sulfide (H2S), carbon dioxide (CO2), or similar contaminants. The terms acid gas and sour gas are often incorrectly treated as synonyms. Strictly speaking, a… … Wikipedia
sulfur dioxide — n a heavy pungent toxic gas SO2 that is easily condensed to a colorless liquid, is used esp. in making sulfuric acid, in bleaching, as a preservative, and as a refrigerant, and is a major air pollutant esp. in industrial areas * * * [NF] a… … Medical dictionary
acid rain — n. rain or other precipitation with a high concentration of acids produced by sulfur dioxide, nitrogen dioxide, and other such gases that result from the combustion of fossil fuels: it has a destructive effect on plant and aquatic life, buildings … English World dictionary
