where is lead found
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Lead A sulfide formed with tin and antimony is called franckeite. Lead is found in the mineral nagyagite, a sulfide, along with gold, iron, antimony, and tellurium. Silver joins with lead and antimony in the sulfide andorite, AgPbSb3S6. Lead, copper and iron join in the sulfide betekhtinite. In the sulfide mineral hutchinsonite,(Tl, Pb)2As5S9 , lead joins with arsenic and thallium.
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Occupational Safety and Health Administration Lead enters the body primarily through inhalation and ingestion. Today, adults are mainly exposed to lead by breathing in lead-containing dust and fumes at work, or from hobbies that involve lead. Lead passes through the lungs into the blood where it can harm many of the body's organ systems. While inorganic lead does not readily enter the body through the skin, it can enter the body through accidental ingestion (eating, drinking, and smoking) via contaminated hands, clothing, and surfaces.
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Learn about Lead Lead can accumulate in our bodies over time, where it is stored in bones along with calcium. During pregnancy, lead is released from bones as maternal calcium and is used to help form the bones of the fetus. This is particularly true if a woman does not have enough dietary calcium.
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- One air masses is warmer than the other and therefore more bouyant. Where the two air masses meet the warmer, more bouyant air mass with be uplifted relative to the colder, more dense air mass. Depending on which of the air masses is advance there will be either an and Advancing Warm Front or an advancing Cold Front.
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- For those that don’t know, according the to the Environmental Protection Agency (EPA) lead occurs naturally in uncontaminated soils at a level of between 50 ppm and 400 ppm (http://www.epa.gov/superfund/lead/health.htm) because lead is one of the elements that the Earth is made of.
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Lead Compounds of lead are usually found in the +2 oxidation state rather than the +4 state common with lighter members of the carbon group. Exceptions are mostly limited to organolead compounds. Like the lighter members of the group, lead tends to bond with itself; it can form chains, rings and polyhedral structures.
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Adult Lead Poisoning Lead (/lɛd/) is a chemical element in the carbon group with symbol Pb (from Latin: plumbum) and atomic number 82. It is a soft, malleable and heavy post-transition metal.
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Southeast Missouri Lead District The area of mining has changed over the years. The Old Lead Belt is centered on Park Hills and Desloge, while the New Lead Belt or Viburnum Trend is near Viburnum. The Irish Wilderness in Ripley and Oregon Counties has significant lead ore; however, this is a protected wilderness area.
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Period 6 element Lead (/lɛd/) is a chemical element in the carbon group with symbol Pb (from Latin: plumbum) and atomic number 82. Lead is a soft, malleable and heavy post-transition metal.Metallic lead has a bluish-white color after being freshly cut, but it soon tarnishes to a dull grayish color when exposed to air.Lead has a shiny chrome-silver luster when it is melted into a liquid. It is also the heaviest non-radioactive element (some radioactive elements, like technetium, are lighter).ead-205 is the most stable radioisotope of lead, with a half-life of over 10 7 years. 47 nuclear isomers (long-lived excited nuclear states), corresponding to 24 lead isotopes, have been characterized. The most long-lived isomer is lead-204m2 (half-life of about 1.1 hours).
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Occupational Safety and Health Administration Industry Group Profile-Lead Exposure. Inorganic lead is a malleable, blue-gray, heavy metal that occurs naturally in the Earth’s crust. Lead was one of the first metals used by humans and consequently, the cause of the first recorded occupational disease (lead colic in a 4th century BC metal worker).
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Lead Poisoning Lead poisoning is a serious and sometimes fatal condition. It occurs when lead builds up in the body. Lead is a highly toxic metal and a very strong poison. It is found in lead-based paints, including paint on the walls of old houses and toys. high, toxic dose of lead poisoning may result in emergency symptoms. These include: 1  severe abdominal pain and cramping. 2  vomiting. 3  muscle weakness.
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Elements for Kids Where did lead get its name? Lead is an Anglo-Saxon word for the metal that has been used and known about since ancient times. The symbol Pb comes from the Latin word for lead, plumbum. The Romans used lead for making pipes, which is where the word plumber comes from as well. Isotopes Lead occurs naturally in the form of four isotopes. The most common isotope is lead-208. Interesting Facts about Lead. For many years lead and tin were thought to be the same metal. Lead was called plumbum nigrum for black lead and tin was called plumbum album for white lead. Over one million tons of lead is recycled each year. People have known about lead poisoning since Ancient China and Ancient Greece. The element is a member of the carbon group (column 14) in the periodic table.
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- Lead, like cadmium, mercury and aluminum, has no known use in the body. SUBTLE NEUROLOGICAL AND MENTAL DISORDERS. Excess lead can lead to a variety of often subtle neurological and mental disorders. POISONING OCCURS SLOWLY OVER YEARS. Lead poisoning often occurs slowly, over a long period of time as the lead accumulates in the body's tissues. SOURCES OF LEAD POISONING: 1  canned foods (especially canned tuna) 2  various paints. 3  leaded gasoline. 4  hair dye. 5  synthetic baby formulas. 6  vehicle and machinery exhaust fumes.
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- What It Is. A lead test is used to determine the amount of lead in the blood. Lead is a heavy metal found naturally in the environment as well as in many common consumer products. Though it serves no purpose in the human body, most people have a small amount of it in their bodies because it's so prevalent in our surroundings.
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Southeast Missouri Lead District Significant among Missouri's lead mining concerns in the district was the Desloge family and Desloge Consolidated Lead Company in Desloge, Missouri and Bonne Terre—having been active in lead trading, mining and smelting from 1823 in Potosi to 1929.
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Occupational Safety and Health Administration In the general population, lead may be present in small but hazardous concentrations in food, water, and air. Lead poisoning from deteriorating old paint is the primary source of elevated blood lead levels in children. Children under the age of six are at risk of developing cognitive health effects even at very low blood lead levels. Pregnant women or those who might become pregnant must avoid lead exposure because it is toxic to the fetus. Another source of environmental exposure to lead is from workers who take home lead dust on their clothing and shoes.
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Lead - Pb Lead is one out of four metals that have the most damaging effects on human health. It can enter the human body through uptake of food (65%), water (20%) and air (15%). Foods such as fruit, vegetables, meats, grains, seafood, soft drinks and wine may contain significant amounts of lead.
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Lead Lead is a chemical element that is assigned the symbol Pb (from the Latin plumbum) and the atomic number 82. It is a heavy metal that is denser than most common materials. Lead is soft and malleable, and has a relatively low melting point. When freshly cut, lead is bluish-white; it tarnishes to a dull gray color when exposed to air. Lead has the highest atomic number of any stable element and concludes three major decay chains of heavier elements. Lead is a relatively unreactive post-transition metal.
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- Prop 65 lists of over 900 substances, including lead, that businesses are required to warn consumers about. Lead is a natural element in soil, so it can be found in trace amounts in anything that is grown or drawn from the earth — including fruits, vegetables, and, of course, Earthpaste.rop 65 lists of over 900 substances, including lead, that businesses are required to warn consumers about. Lead is a natural element in soil, so it can be found in trace amounts in anything that is grown or drawn from the earth — including fruits, vegetables, and, of course, Earthpaste.
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- Lead is the fifth element of the fourteenth column in the periodic table. It is classified as a post-transition metal, a heavy metal, and a poor metal. Lead atoms have 82 electrons and 82 protons with 4 valence electrons in the outer shell. Characteristics and Properties. Under standard conditions lead is a soft silvery metal with a bluish tint.
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- Galena [PbS] or lead sulphide is the main source of lead [Pb]. It is widespread in the district and is found along with the common vein minerals such as quartz, calcite, barytes and dolomite. Galena has been the most important commercial mineral found in the locality. It was the basis of the Lead Mining industry which was of economic significance, especially during the 18th and 19th Centuries. The Galena crystal group on the left, is an example which was found at Leadhills in the Glengonnar Mine.
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Lead Fact Sheet Lead's malleability and ease of smelting accounted for its early use in pipes and lead sheeting for construction purposes. Most lead today is used in batteries for motor vehicles and in communications. The effect of lead mining on the environment has been markedly reduced over the past 20 years as has the use of toxic lead compounds.
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- The ancient Romans used lead to make plumbing pipes, as joining pins for limestone building blocks and it was popular amongst Roman alchemists. Historically, tin and lead were hard to distinguish between. The Romans called lead 'plumbum nigrum' (black lead) and tin was called 'plumbum candidum' (bright lead). The melting point of lead is 621.4 °F (327.46 °C) and the boiling point is 3,180.2 °F (1,749 °C). In 2008, Australia, China and the United States produced the most lead.
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Lead poisoning and health Exposure to lead-contaminated soil and dust resulting from battery recycling and mining has caused mass lead poisoning and multiple deaths in young children in Nigeria, Senegal and other countries. Once lead enters the body, it is distributed to organs such as the brain, kidneys, liver and bones.
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LEAD Lead is obtained from its ores by a method used with many metals. First, the ore is roasted (heated in air). Roasting, also called smelting, converts the ore to a compound of lead and oxygen, lead oxide (PbO 2 ). Lead oxide is then heated with charcoal (pure carbon). The carbon takes oxygen away from the lead oxide.
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- Pencil lead is made from a form of carbon called graphite. Graphite. cannot be found easily in the U.S. It is mainly imported from Sri Lanka. or parts of Canada. 3. This graphite is then mixed with wax and clay. This wax is found mainly. in Mexico, while the clay is found in the Southern parts of the U.S.