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Diaz, M., Cazorla, D., and Acosta, M. [Efficacy, safety and acceptability of precipitated sulphur petrolatum for topical treatment of scabies at the city of Coro, Falcon State, Venezuela]. Rev Invest Clin 2004;56(5):615-22. View abstract.
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Goszcz, A., Kostka-Trabka, E., Grodzinska, L., et al. [The effect of treatment with sulphur water from the spring in Wieslaw in Busko-Solec on levels of lipids, the fibrinolytic system and thrombogenic platelet function in patients with arteriosclerosis]. Pol Merkur Lekarski 1997;3(13):33-6. View abstract.
Potash Sulphur Super is most suited to hill and high country farms on sedimentary soils which require some potassium inputs and where either sulphate leaching is high or fertiliser application occurs on 2-3 yearly intervals rather than annually. Potash Sulphur Super is also suitable for pumice and peat soils.
Sulfur (or sulphur in British English) is a chemical element with the symbol S and atomic number 16. It is abundant, multivalent and nonmetallic. Under normal conditions, sulfur atoms form cyclic octatomic molecules with a chemical formula S8. Elemental sulfur is a bright yellow, crystalline solid at room temperature.
In most forest ecosystems, sulfate is derived mostly from the atmosphere; weathering of ore minerals and evaporites contribute some sulfur. Sulfur with a distinctive isotopic composition has been used to identify pollution sources, and enriched sulfur has been added as a tracer in hydrologic studies. Differences in the natural abundances can be used in systems where there is sufficient variation in the 34S of ecosystem components. Rocky Mountain lakes thought to be dominated by atmospheric sources of sulfate have been found to have characteristic 34S values from lakes believed to be dominated by watershed sources of sulfate.
32S is created inside massive stars, at a depth where the temperature exceeds 2.5109 K, by the fusion of one nucleus of silicon plus one nucleus of helium.[28] As this nuclear reaction is part of the alpha process that produces elements in abundance, sulfur is the 10th most common element in the universe.
It is the fifth most common element by mass in the Earth. Elemental sulfur can be found near hot springs and volcanic regions in many parts of the world, especially along the Pacific Ring of Fire; such volcanic deposits are currently mined in Indonesia, Chile, and Japan. These deposits are polycrystalline, with the largest documented single crystal measuring 221611 cm.[31] Historically, Sicily was a major source of sulfur in the Industrial Revolution.[32] Lakes of molten sulfur up to 200 m in diameter have been found on the sea floor, associated with submarine volcanoes, at depths where the boiling point of water is higher than the melting point of sulfur.[33]
This reaction highlights a distinctive property of sulfur: its ability to catenate (bind to itself by formation of chains). Protonation of these polysulfide anions produces the polysulfanes, H2Sx where x= 2, 3, and 4.[39] Ultimately, reduction of sulfur produces sulfide salts:
In the late 18th century, furniture makers used molten sulfur to produce decorative inlays.[62] Molten sulfur is sometimes still used for setting steel bolts into drilled concrete holes where high shock resistance is desired for floor-mounted equipment attachment points. Pure powdered sulfur was used as a medicinal tonic and laxative.[36]
Sulfur is derived from the Latin word sulpur, which was Hellenized to sulphur in the erroneous belief that the Latin word came from Greek. This spelling was later reinterpreted as representing an /f/ sound and resulted in the spelling sulfur, which appears in Latin toward the end of the Classical period. The true Ancient Greek word for sulfur, θεῖον, theîon (from earlier θέειον, théeion), is the source of the international chemical prefix thio-. The Modern Standard Greek word for sulfur is θείο, theío.
In 12th-century Anglo-French, it was sulfre. In the 14th century, the erroneously Hellenized Latin -ph- was restored in Middle English sulphre. By the 15th century, both full Latin spelling variants sulfur and sulphur became common in English. The parallel fph spellings continued in Britain until the 19th century, when the word was standardized as sulphur.[64] On the other hand, sulfur was the form chosen in the United States, whereas Canada uses both.
Sulfur may be found by itself and historically was usually obtained in this form; pyrite has also been a source of sulfur.[68] In volcanic regions in Sicily, in ancient times, it was found on the surface of the Earth, and the "Sicilian process" was used: sulfur deposits were piled and stacked in brick kilns built on sloping hillsides, with airspaces between them. Then, some sulfur was pulverized, spread over the stacked ore and ignited, causing the free sulfur to melt down the hills. Eventually the surface-borne deposits played out, and miners excavated veins that ultimately dotted the Sicilian landscape with labyrinthine mines. Mining was unmechanized and labor-intensive, with pickmen freeing the ore from the rock, and mine-boys or carusi carrying baskets of ore to the surface, often through a mile or more of tunnels. Once the ore was at the surface, it was reduced and extracted in smelting ovens. The conditions in Sicilian sulfur mines were horrific, prompting Booker T. Washington to write "I am not prepared just now to say to what extent I believe in a physical hell in the next world, but a sulphur mine in Sicily is about the nearest thing to hell that I expect to see in this life."[69]
Elemental sulfur was extracted from salt domes (in which it sometimes occurs in nearly pure form) until the late 20th century. Sulfur is now produced as a side product of other industrial processes such as in oil refining, in which sulfur is undesired. As a mineral, native sulfur under salt domes is thought to be a fossil mineral resource, produced by the action of anaerobic bacteria on sulfate deposits. It was removed from such salt-dome mines mainly by the Frasch process.[36] In this method, superheated water was pumped into a native sulfur deposit to melt the sulfur, and then compressed air returned the 99.5% pure melted product to the surface. Throughout the 20th century this procedure produced elemental sulfur that required no further purification. Due to a limited number of such sulfur deposits and the high cost of working them, this process for mining sulfur has not been employed in a major way anywhere in the world since 2002.[70][71]
Sulfur reacts directly with methane to give carbon disulfide, which is used to manufacture cellophane and rayon.[36] One of the uses of elemental sulfur is in vulcanization of rubber, where polysulfide chains crosslink organic polymers. Large quantities of sulfites are used to bleach paper and to preserve dried fruit. Many surfactants and detergents (e.g. sodium lauryl sulfate) are sulfate derivatives. Calcium sulfate, gypsum, (CaSO42H2O) is mined on the scale of 100 million tonnes each year for use in Portland cement and fertilizers.
Southwest Dairy Museum and Learning CenterLocated at 1200 Houston Street, exhibits depict all facets of milk production from an early farm kitchen to the modern day manufacturing of milk products. It also houses an old-fashioned soda bar where visitors can enjoy ice cream treats and light lunches, as well as a souvenir shop.
Carbon dioxide capture and sequestration is a set of technologies that can potentially greatly reduce CO2 emissions from new and existing coal- and gas-fired power plants, industrial processes, and other stationary sources of CO2. For example, a CCS project might capture CO2 from the stacks of a coal-fired power plant before it enters the atmosphere, transport the CO2 via pipeline, and inject the CO2 deep underground at a carefully selected and suitable subsurface geologic formation, such as a nearby abandoned oil field, where it is securely stored. 041b061a72