lead
DESCRIPTION
LEAD. Atomic Number 82 (highest amongst the stable elements) Melting point: 600.61 K. Boiling point 2022 K. Density: 11.34 g·cm−3Post-Transition Metal Tin ↑ Thallium ← Lead → Bismuth ↓ Ununquadium. Bluish white when recently cut. Dull gray when exposed to air. - PowerPoint PPT PresentationTRANSCRIPT
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LEAD
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Atomic Number 82(highest amongst the stable elements)
Melting point: 600.61 K. Boiling point 2022 K.
Density: 11.34 g·cm−3 Post-Transition Metal
Tin↑
Thallium ← Lead → Bismuth↓
Ununquadium
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• Bluish white when recently cut.• Dull gray when exposed to air.• Shiny chrome silver when melted
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Lead In History
Symbol: Pb
Oldest of the Metals
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Roman Piping in Bath (Aquae Sulis), England
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Ammunition
Diving Weights
Wheel weights
PaintRadiation shielding
Recent uses of Lead
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Lead accumulates in the brain, spleen, liver, kidneys, and bones.
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• Over 98% of homes in the U.S. have pipes that contain lead or lead solder.
• 7,500 cases of illness are linked to drinking water in the United States each year
• Drinking water supplied to 30 million people in 819 cities contains unhealthy levels of lead
• 50% of the population getting unsafe levels exposure
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30,000,000Lead laden tv’s dumped on poor
countries.“U.S. citizens will buy 30 million new
digital televisions this year alone, sending their old lead-laden TVs to the dump, or more likely, overseas to China
or India.”
8 Pounds of LEAD per SET
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Despite being the largest producer of e-waste, the U.S. has refused to sign the international Basel Convention
to prevent the transfer of hazardous waste from developed to developing countries.
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People, especially children, are susceptible to lead poisoning
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Acute lead poisoning associated with backyard lead smelting in Jamaica
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Lead poisoning in aquatic birds
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Small aircraft account for 29 percent of all lead emissions
in the United States
56 tons into the airevery year
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61% of the 33 lipsticks tested contained lead
one third of the lipsticks tested exceeded the U.S. FDA safety standards
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Including…
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•Water•Air•Toys•Food Chain
LEAD
DEAD
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Productions
Porcupyne