Chemistry: Toxic Elements

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Toxic Elements Aug 12th 2011, 07:38 Have you ever wondered which elements are toxic? Everything is toxic if the dose is high enough, but some elements are more deadly than others. I've compiled a short list of poisonous elements that have no nutritional value, even in trace amounts. Some of these elements accumulate in the body, so there is no truly safe exposure limit for those elements (e.g., lead, mercury). Barium and aluminum are examples of elements which can be excreted, at least to a certain extent. Most of these elements are metals. The man-made elements are toxic on the basis of their radioactivity. Aluminum Antimony Arsenic (metalloid) Barium Beryllium Cadmium Hexavalent Chromium Cr6+ (Cr3+ is necessary in trace amounts for proper nutrition) Lead Mercury Osmium Thallium Vanadium radioactive metals Polonium (metalloid) Thorium Radium Uranium Transuranium elements (e.g., polonium, americium) Radioactive isotopes of metals that might not otherwise be highly toxic (e.g., cobalt-60, strontium-90) What Makes Lead Poisonous? | Most Poisonous Compound References: OSHA: Toxic Metals Dartmouth Toxic Metal Research Program

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