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Arsenic - Wikipedia Minerals with the formula MAsS and MAs 2 (M = Fe, Ni, Co) are the dominant commercial sources of arsenic, together with realgar (an arsenic sulfide mineral) and native (elemental) arsenic An illustrative mineral is arsenopyrite ( Fe As S ), which is structurally related to iron pyrite
Arsenic - World Health Organization (WHO) Arsenic is one of WHO’s 10 chemicals of major public health concern WHO’s work to reduce arsenic exposure includes setting guideline values, reviewing evidence and providing risk management recommendations WHO publishes a guideline value for arsenic in its Guidelines for drinking-water quality The Guidelines are intended for use as the
Arsenic | Definition, Symbol, Uses, Facts | Britannica By the 18th century, arsenic was well known as a unique semimetal Occurrence and distribution The abundance of arsenic in the Earth’s crust is about five grams per ton; the cosmic abundance is estimated as about four atoms per million atoms of silicon The element is widely distributed
Fact Sheet on Arsenic - U. S. Environmental Protection Agency Arsenic is a naturally occurring element that is found in combination with either inorganic or organic substances to form many different compounds Inorganic arsenic compounds are found