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Arsenic: Metals
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Arsenic is a highly poisonous metallic element registered with the Chemical Poisoning and Environmental Toxicity Centers. Inorganic arsenic deposits in the hair, skin, and nails, and once within the hair follicles, as with most toxic metals, it will stay in the shaft for years. Below are some common sources for arsenic:
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Arsenic is an element that is known as a metalloid. It can act like a metal and a nonmetal at different times. It does not conduct electricity very well (like most metals), but it is a semiconductor. This means that arsenic can be used in computers to make them faster.
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Arsenic does not follow the book. It is an environmental toxicant, but often unrelated to industrial sources. It is a metal, but its metabolism involves organic modifications. It is an indisputable human carcinogen, but is largely negative in typical animal models of chemical carcinogenesis and its carcinogenic mechanism of action is a topic of great scientific debate. Oh, and by the way, arsenic is an excellent, anti-cancer pharmacological agent.
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Arsenic is released into the environment through copper, zinc and lead smelters, as well as chemical and glass manufacturers. It has been shown that arsenic is able to cross the placenta and enter the fetus. The total amount of metal accumulating in the fetus increases with gestational age, supporting theories of placental transfer.
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Arsenic is widely distributed in nature, and this element occasionally is found uncombined, generally in association with such metals as antimony and silver. Arsenic ... occurs combined in its sulfides realgar and orpiment, as arsenic oxide, and as a constituent of various metallic sulfides, of which arsenopyrite is the most abundant.
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Arsenic is a natural element which behaves like a metal. It is present in the environment both naturally and due to certain human activities. It has many different forms. It can exist in inorganic or organic form, inorganic arsenic being generally considered more toxic.
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