Another common source of metals in our environment is old paint. Paint applied before 1973 is very likely to contain lead, a toxic metal. If the old paint is chipping, people can be exposed to the lead in the paint chips and paint dust. Lead poisoning can result in a wide range of symptoms from weakness and loss of appetite to coma and death in very acute or massive exposures. The semiconductor industry uses many types of metals.
Semiconductors are parts of personal computers.
During the manufacturing process, toxic metals are often created as by products. There is no exposure from the use of the finished product. Some people have been exposed to mercury in the fish that they eat. Many of the fish in the Great Lakes region of the United States are contaminated with methyl mercury. People are often requested to limit their intake of fish from these lakes.