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Arsenic: 2. Where does environmental arsenic come from?
Arsenic is found in the natural environment in some abundance in the Earth's crust and in small quantities in rock, soil, water and air. It is present in many different minerals. About one third of the arsenic in the atmosphere comes from natural sources, such as volcanoes, and the rest comes from manmade sources. Due to natural geological contamination, high levels of arsenic can be found ...
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Scientific Facts on Arsenic
Context Arsenic is a poisonous substance, which is released both from certain human activities and naturally from the Earth's crust.. Humans may be exposed to arsenic mainly through food and water, particularly in certain areas where the groundwater is in contact with arseniccontaining minerals.