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www.ncbi.nlm.nih.gov/pmc/articles/PMC4186553

Arsenic is a ubiquitous, naturally occurring metalloid that may be a significant risk factor for cancer after exposure to contaminated drinking water, cigarettes, foods, industry, occupational environment, and air. Among the various routes of arsenic exposure, drinking water is the largest source of ...

www.greenfacts.org/en/arsenic/l-2/arsenic-2.htm

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 man-made sources. Due to natural geological contamination, high levels of arsenic can be found ...

en.wikipedia.org/wiki/Arsenic

Arsenic is a chemical element with symbol As and atomic number 33. Arsenic occurs in many minerals, usually in combination with sulfur and metals, but also as a pure elemental crystal. Arsenic is a metalloid. It has various allotropes, but only the gray form, which has a metallic appearance, is important to industry.

www.globalhealingcenter.com/natural-health/4-sources-of...

Crazy Sources of Arsenic. Whether you know it or not, you could be exposing yourself to arsenic on a daily basis for which an accumulation could cause issues in the long term. Arsenic is dangerous and here are 4 sources you’d never expect. 1. Baby Formula. Arsenic is bad news for all, but babies are especially vulnerable.

www.atsdr.cdc.gov/csem/csem.asp?csem=1&po=5

Natural and Industrial Sources: Arsenic is released into the air by volcanoes, through weathering of arsenic-containing minerals and ores, and by commercial or industrial processes. Arsenic occurs naturally in the earth’s crust, and much of its dispersion in the environment stems from mining and commercial uses. In industry, arsenic is a ...

safewater.zendesk.com/hc/en-us/articles/212074607-What-are...

The contamination of a drinking water source by arsenic can result from either natural or human activities. Arsenic is an element that occurs naturally in rocks and soil, water, air, plants, and animals. Volcanic activity, the erosion of rocks and minerals, and forest fires are natural sources that can release arsenic into the environment.

www.atsdr.cdc.gov/emes/training/page2862.html

Arsenic is ubiquitous in the environment. Potential sources of arsenic exposure include Groundwater: The areas in the United States with the highest natural groundwater concentrations of arsenic are the Southwest, the Northwest, Alaska, and other areas near geothermal activity.

www.healthline.com/health/arsenic-poisoning

Arsenic poisoning, or arsenicosis, occurs after the ingestion or inhalation of high levels of arsenic. Arsenic is a type of carcinogen that’s gray, silver, or white in color.

www.who.int/news-room/fact-sheets/detail/arsenic

Low-arsenic water can be used for drinking, cooking and irrigation purposes, whereas high-arsenic water can be used for other purposes such as bathing and washing clothes. Discriminate between high-arsenic and low-arsenic sources. For example, test water for arsenic levels and paint tube wells or hand pumps different colours.

www.drdarrinlew.us/.../sources-of-arsenic-in-soil.html

The ultimate source of arsenic on the Earth's surface is igneous activity (Nriagu 1994). Arsenic is widely spread in the upper crust of the Earth, although mainly at very low concentrations, with arsenic concentrations in soil ranging from 0.1 to more than 1,000 ppm (mg kg-1). In atmospheric dust, the range is 503,400 ppm.