Lead
hideLead (pronounced /ˈlɛd/) is a main-group element with symbol Pb (Latin: plumbum) and atomic number 82. Lead is a soft, malleable poor metal, also considered to be one of the heavy metals. Lead has a bluish-white color when freshly cut, but tarnishes to a dull grayish color when exposed to air. It has a shiny chrome-silver luster when melted into a liquid.
Lead is used in building construction, lead-acid batteries, bullets and shot, weights, and is part of solder, pewter, fusible alloys and radiation shields. Lead has the highest atomic number of all stable elements, although the next element, bismuth, has a half-life so long (longer than the estimated age of the universe) it can be considered stable. Like mercury, another heavy metal, lead is a potent neurotoxin that accumulates in soft tissues and bone over time. Lead poisoning was documented in ancient Rome, Greece, and China.
For more information about Lead, read the full article at
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News tagged with lead
Childhood lead exposure causes permanent brain damage
2 hours ago |
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A study using functional magnetic resonance imaging (fMRI) to evaluate brain function revealed that adults who were exposed to lead as children incur permanent brain injury. The results were presented today at the annual ...
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Heavy metal paradox could point toward new therapy for Lou Gehrig's disease
Medicine & Health / Neuroscience
15 hours ago |
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New discoveries have been made about how an elevated level of lead, which is a neurotoxic heavy metal, can slow the progression of amyotrophic lateral sclerosis, or Lou Gehrig's disease - findings that could point the way ...
How can scientists measure evolutionary responses to climate change?
20 hours ago |
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As global temperatures continue to rise scientists are presented with the complex challenge of understanding how species respond and adapt. In a paper published in Insect Conservation and Diversity, Dr Francisco Rodriguez-Trelles and Dr ...
Physician urges changes in diagnosis for sore throat in young adults
13 hours ago |
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New analysis from the University of Alabama at Birmingham (UAB) suggests that physicians need to re-think their diagnosis and treatment of sore throat, or pharyngitis, in adolescents and young adults to consider a more newly ...
MRI helps detect life-threatening pregnancy complication
21 minutes ago |
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A study presented today at the annual meeting of the Radiological Society of North America (RSNA) revealed that MRI is a highly accurate means of identifying placenta accreta, a potentially life-threatening and increasingly ...
Beverage can stay-tabs pose swallowing risk
23 hours ago |
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Three decades ago, a study revealed that beverage can pull-tabs were being swallowed by children, prompting a switch by U.S. manufacturers to stay-tabs. But a study presented today at the annual meeting of the Radiological ...
Overweight children may develop back pain and spinal abnormalities
1hour ago |
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Being overweight as a child could lead to early degeneration in the spine, according to a study presented today at the annual meeting of the Radiological Society of North America (RSNA).
First Pump-Probe Experiment at Linac Coherent Light Source Completed
14 hours ago |
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(PhysOrg.com) -- The first experiment using the Linac Coherent Light Source to illuminate molecules via a "pump-probe" technique has been completed by an international team of more than 30 scientists from ...
Improving Cardiac Rehab for Women with Heart Disease
14 hours ago |
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(PhysOrg.com) -- USF Health researcher shows motivational "women-only" cardiac rehab improves symptoms of depression.
First metallic nanoparticles resistant to extreme heat
Nanotechnology / Nanomaterials
18 hours ago |
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A University of Pittsburgh team overcame a major hurdle plaguing the development of nanomaterials such as those that could lead to more efficient catalysts used to produce hydrogen and render car exhaust less toxic. The researchers ...
Is it right for drug companies to carry out their own clinical trials?
16 hours ago |
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In BMJ today two experts debate whether the conflict of interest is unacceptable when drug companies carry out clinical trials on their own medicines.
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