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Lead And The Environment - College Papers

Lead And The Environment

Some materials are so commonplace that we take them for granted. One of
those materials is a grayish metal that has been with us for thousands of years.
That metal is lead, still one of the world's most useful substances, and one
that never ceases to find a role in human society.

Lead has the atomic symbol of Pb (for plumbum, lead in Latin). The
atomic number for lead is 82 and the atomic mass is 207.19 AMU. It melts at
about 327.502 oC and boils at 1740 oC. Lead is a heavy, ductile, soft, gray
solid. It is soluble in nitric acid and insoluble in water. It is found in North,
Central and South America, Australia, Africa and Europe. In modern times, lead
has found a wide range of uses, and ...

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and mixed with other metallic elements.

Lead was used in ancient times for making coinage, art objects and water
pipes. One of the first known toxic substances, lead was used by the Romans for
lining aqueducts and in glazes on containers used for food and wine storage; and
it is suspected to have resulted in widespread lead poisoning. Members of the
famous Franklin Expedition to the Northwest Passage in the mid-1840s met a
similar fate, being poisoned from lead in solder, widely used at the time to
seal tins used to store foods. Until recently, one of the most significant uses
was an anti-knock additive in gasoline. In the 1970s and 1980s, steps were taken
to reduce the use of leaded gas. By 1990, these actions had virtually eliminated
the use of lead in gasoline. Lead is also one of the best and earliest examples
of recycling about 55 percent of the lead used in Canada comes from recycled
material.

One particular category of toxic tort is injury caused by exposure ...

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Lead And The Environment. (2007, August 8). Retrieved December 23, 2024, from http://www.essayworld.com/essays/Lead-And-The-Environment/69282

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PAPER DETAILS

Added: 8/8/2007 06:42:27 AM
Category: Science & Nature
Type: Premium Paper
Words: 871
Pages: 4

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