Lead - Wikipedia
Lead (/ l ɛ d /) is a chemical element; it has symbol Pb (from Latin plumbum) and atomic number 82. It is a heavy metal that is denser than most common materials. Lead is soft and malleable, and also has a relatively low melting point. When freshly cut, lead is …
Heavy Metal Poisoning (Toxicity) - Cleveland Clinic
2022年7月7日 · Heavy metal poisoning (toxicity) is the result of exposure to heavy metals like lead, mercury and arsenic. Heavy metals bind to parts of your cells that prevent your organs from doing their job. Symptoms of heavy metal poisoning can be life threatening and they can cause irreversible damage.
Lead | Definition, Uses, Properties, & Facts | Britannica
2025年1月6日 · Lead, a soft, silvery white or grayish metal in Group 14 (IVa) of the periodic table. Lead is very malleable, ductile, and dense and is a poor conductor of electricity. Known in antiquity and believed by the alchemists to be the oldest of metals, lead is highly durable and resistant to corrosion.
Lead poisoning - World Health Organization (WHO)
Lead is a naturally occurring toxic metal found in the Earth’s crust. Its widespread use has resulted in extensive environmental contamination, human exposure and significant public health problems in many parts of the world.
Toxic Mechanisms of Five Heavy Metals: Mercury, Lead, Chromium, Cadmium ...
Mercury, lead, chromium, cadmium, and arsenic have been the most common heavy metals that induced human poisonings. Here, we reviewed the mechanistic action of these heavy metals according to the available animal and human studies.
Lead | UNEP - UN Environment Programme
Lead is a harmful heavy metal. Lead is a naturally occurring metal. Its chemical and physical characteristics, such as its malleability, low melting point and resistance to corrosion, make it amenable to a range of uses. Lead is also highly toxic to humans and the environment.
Toxicity, mechanism and health effects of some heavy metals
Heavy metal toxicity has proven to be a major threat and there are several health risks associated with it. The toxic effects of these metals, even though they do not have any biological role, remain present in some or the other form harmful for the human body and its proper functioning.
Lead Facts and Properties - Element 82 or Pb - ThoughtCo
2019年9月2日 · Lead is a heavy metallic element, commonly encountered in radiation shielding and soft alloys. It is a dull gray metal with element symbol Pb and atomic number 82. Here's a collection of interesting facts about lead, including about its properties, uses, and sources.
Facts About Lead - Live Science
2016年10月6日 · Lead is an incredibly useful metal, but it is also toxic to humans. In fact, if we didn't have to worry about breathing in its dust or ingesting its particles, lead would be in widespread use...
Lead: What It Is, Properties, Importance, Uses, and Advantages
2023年8月8日 · Lead is a heavy metal used in producing lead-acid batteries and in joining components to circuit boards. Learn more about it here.