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Information @ a Glance

General

  • Arsenic is a chemical element that has the symbol As and atomic number 33.
  • Arsenic is very similar chemically to its predecessor, phosphorus.
  • Arsenic has been known and used in Persia and elsewhere since ancient times.
  • Arsenic occurs naturally in a wide range of minerals, which, together with a once widespread use of arsenic in pigments, insecticides and herbicides, represent the major sources of arsenic in natural waters.

Process

  • Solar oxidation and removal of arsenic (SORAS) is a simple method that uses irradiation of water with sunlight in PET- or other UV-A transparent bottles to reduce arsenic levels in drinking water.
  • Phytoextraction, a strategy of phytoremediation, uses plants to clean up contaminated soils and has been successfully applied to arsenic contaminated soils.
  • Ferrosand Filter Media is manufactured to exact specifications to ensure the complete oxidation of soluble iron, manganese, and arsenic using stoichiometric quantities of oxidizing agents.

Application

  • A therapy uses arsenic-74, a radioactive isotope that is one of a small number of positron emitters with a half-life suitable for medical imaging.
  • It is used in the wood-treating chemical chromated copper arsenate.
  • Most of the arsenic used domestically is consumed as the trioxide, mainly in the manufacture of preservatives for pressure-treated wood but also in the manufacture of herbicides.
  • The major end uses for arsenic metal are as minor additives in nonferrous metal alloys, principally lead alloys used in lead-acid storage batteries and certain copper alloys.

Market

  • China was the top producer of white arsenic with almost 50% world share followed by Chile and Peru.
  • The amount of arsenic consumed as metal domestically is very small, accounting for probably less than 3% of total arsenic demand.
  • The largest market basket survey of arsenic in U.S. rice, indicates that rice from California contains, on average, about 40% less arsenic than rice from the south central U.S.—Arkansas, Louisiana, Mississippi, Texas, and Missouri.
  • Over 35,000 metric tons of arsenic has been imported into Florida from places like China, Chile and Mexico to be used as an ingredient in pressure treating CCA-treated wood

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