ERICH SCHREMPP / SCIENCE PHOTO LIBRARY ERICH SCHREMPP / SCIENCE PHOTO LIBRARY
Lead ingot. View of an ingot of lead (chemical symbol: Pb). Lead is a heavy, soft, ductile metal with an atomic number of 82. Lead is used in building technology, batteries and bullets, and is mixed with other metals to form alloys such as pewter and solder. Lead occurs naturally as galena (lead II sulphide) and cerussite (lead II carbonate). Lead forms several compounds poisonous to humans and the metal itself is a cumulative toxin. Lead poisoning causes diarrhoea, vomiting, anaemia, and in severe cases, brain damage. The discovery of the toxic effects of lead has led to it being largely removed from use in water pipes, food containers and petrol.
Model release not required. Property release not required.