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Topic: Mercury (element)

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	Mercury (element) - MSN Encarta
		Mercury is used in thermometers because its coefficient of expansion is nearly constant—that is, the change in volume for each degree of rise or fall in temperature is the same.
		Among the commercially important compounds of mercury are mercuric sulfide, a common antiseptic also used as the pigment vermilion; mercurous chloride, or calomel, used for electrodes, and formerly used as a cathartic; mercuric chloride, or corrosive sublimate; and organic compounds used as disinfectants, germicides, and antiseptics, known as mercurials.
		Mercury is acutely hazardous as a vapor and in the form of its water-soluble salts, which corrode membranes of the body.
	encarta.msn.com /encyclopedia_761556180/Mercury_(element).html (978 words)

	Mercury (element) - MSN Encarta
		Mercury is one of the transition elements of the periodic table.
		Mercury is used in thermometers because its coefficient of expansion is nearly constant; the change in volume for each degree of rise or fall in temperature is the same.
		Mercury is acutely hazardous as a vapour and in the form of its water-soluble salts, which corrode membranes of the body.
	uk.encarta.msn.com /encyclopedia_761556180/Mercury_(element).html (526 words)

	It's Elemental - The Element Mercury
		Mercury was known to the ancient Chinese and Hindus and has been found in 3500 year old Egyptian tombs.
		Mercury is not usually found free in nature and is primarily obtained from the mineral cinnabar (HgS).
		Mercury is poisonous and can enter the body through the respiratory tract, the digestive tract or directly through the skin.
	education.jlab.org /itselemental/ele080.html (221 words)

	Mercury (element) - guideofcasinos.com (Site not responding. Last check: )
		Mercury is still used in some cultures for folk medicine and ceremonial purposes which may involve ingestion, injection, or the sprinkling of elemental mercury around the home.
		Mercury was included in the treatment of syphilis as early as the 16th century, before the advent of antibiotics.
		Environmental releases and disposal of mercury is regulated in the U.S. primarily by the EPA.
	www.guideofcasinos.com /Mercury_%28element%29.html (0 words)

	mercury (element) - Article and Reference from OnPedia.com
		Mercury, also called quicksilver, is a chemical element in the periodic table that has the symbol Hg (from the Latin hydrargyrum) and atomic number 80.
		Mercury compounds are used as a preservative in vaccines and tattoo inks.
		Elemental, liquid mercury is slightly toxic, while its vapor, compounds and salts are highly toxic and have been implicated as causing brain and liver damage when ingested, inhaled or contacted.
	www.onpedia.com /encyclopedia/Mercury-(element) (1142 words)

	Wikipedia: Mercury (element)
		Mercury is mostly obtained by reduction from the mineral cinnabar.
		Mercury is a heavy, silvery-white univalent and bivalent transition metal that is a relatively poor conductor of heat but a decent conductor of electricity and is the only common metal that is liquid at room temperature (forming an opaque glistening liquid).
		A rare element in the earth's crust, mercury is found either as a native metal (rare) or in cinnabar, corderoite, livingstonite, and other minerals with cinnabar (HgS) being the most common ore. Approximately 50% of the global supply comes from Spain and Italy with much of the rest coming from Slovenia, Russia, and North America.
	www.factbook.org /wikipedia/en/m/me/mercury__element__1.html (999 words)

	mercury, chemical element. The Columbia Encyclopedia, Sixth Edition. 2001-07
		Mercury was discovered in antiquity, and was known to the ancient Chinese, Hindus, and Egyptians, but was not recognized as an element.
		Mercury is not attacked by dilute hydrochloric or sulfuric acid.
		Mercury compounds were formerly used in the treatment of syphilis.
	www.bartleby.com /65/me/mercury.html (550 words)

	Dartmouth Toxic Metal Research - Toxic Metals!
		For example, when the elemental mercury released in emissions from coal-burning power plants or waste incinerators is deposited on lakes and streams it can be converted to inorganic mercury and then to organic forms by microorganisms.
		Since inorganic mercury does not readily cross biological membranes, it is effectively trapped in the brain, but it is not clear which of the two species is responsible for the brain pathology.
		Upon investigation, mercury was detected in the air of workers’ homes, on their clothing and furniture, and most tragically, in the bodies of many workers and their children.
	www.dartmouth.edu /~toxmetal/TXSHhg.shtml (2666 words)

	Mercury
		Mercury and mercury compounds were used from about the 15th century to the mid 20th century to cure syphilis.
		Mercury is highly suitable for use in thermometers because it does not moisten glass and its thermal expansion is uniform.
		Mercury salts released into the environment may frequently be converted by anaerobic bacteria into such compounds, which can then be carried through the food chain to humans as in the disaster at Minamata Bay, Japan Other micro organisms can convert methyl mercury compounds into the insoluble, and therefore harmless, mercury sulfide.
	socrates.berkeley.edu /~eps2/wisc/hg.html (960 words)

	* Mercury - (Environment): Definition
		Mercury - Mercury is a toxic heavy metal released into the atmosphere, most significantly,...
		Mercury exists in three forms: as pure metallic mercury; in inorganic compounds such as mercuric chloride; and in organic compounds such as methylmercury, which is the most toxic.
		Mercury Mercury is a highly toxic element that is found both naturally and as an introduced contaminant in the environment.
	en.mimi.hu /environment/mercury.html (0 words)

	Mercury (element) (Site not responding. Last check: )
		Mercury, also called quicksilver, is a chemical element in the periodic table that has the symbol Hg (from the Latinized Greek hydrargyrum, for watery [or liquid] silver) and atomic number 80.
		Mercury is used in dental amalgam as well as thermometers, barometers and other scientific apparatus, although the use of mercury in thermometers has been largely phased out in clinical and scientific environments (in favor of alcohol-filled, digital or thermistor-based replacements) in the interests of health and safety due to the toxicity of the element.
		Because methylmercury and high levels of elemental mercury can be particularly toxic to unborn or young children, organizations such as the U.S. and FDA recommend that women who are pregnant or plan to become pregnant within the next one or two years, as well as young children avoid eating these species in large amounts.
	www.alloffinance.com /Mercury_%28element%29.html (0 words)

	WebElements Periodic Table of the Elements \| Mercury \| Essential information
		Methyl mercury is a lethal pollutant found in rivers and lakes.
		Isolation: the physical appearance of mercury is well known because of its use in many thermometers.
		It was common to demonstrate the formation of mercury in the laboratory by heating mercury sulphide (cinnabar, HgS) but this is strongly discouraged today because of the toxicity of mercury vapours.
	www.webelements.com /webelements/scholar/elements/mercury/key.html (708 words)

	BBC NEWS \| Europe \| Europe diary: Goodbye mercury
		The explanation I have heard is that a mercury thermometer is unsafe because it is used inside body cavities (not everybody was as lucky as you and had the thermometer put under the tongue) where it might break.
		Regarding the dangers of mercury, when I was at school our chemisry teacher related to us more than once the true (or apocryphal!)story of the schoolboy who stole some mercury from school and hid it in the airing-cupboard at home with the result that the whole family died of mercury poisoning from inhaling mercury vapour.
		Mercury was used extensively in hat making and significant exposure to the vapour particularly when it is heated causes brain damage which is where the phrase 'mad as hatters' comes from.
	news.bbc.co.uk /2/hi/europe/6152366.stm (5085 words)

	NOW. Science & Health. All About Mercury \| PBS
		Mercury is a poor conductor of heat as compared with other metals, but it is a fair conductor of electricity.
		Mercury easily forms alloys with many metals, such as gold, silver, and tin and as such, has been used to make amalgams since 500 BC, and is also useful in recovering gold from its ores.
		The federal government limits the level of inorganic mercury in rivers, lakes, and streams, as well as bottled water; regulates the release of mercury metal into the environment; and protects workers by keeping the amount of inorganic mercury vapor in workroom air to safe levels.
	www.pbs.org /now/science/mercury.html (629 words)

	Curriculum-Mercury In The Environment
		Mercury is a silvery, liquid metal at room temperature and is often referred to as one of the "heavy metals." Like water, mercury can evaporate and become airborne.
		That is OK, it represents the mercury that is excreted by the animal (not 100% of the mercury accumulates).
		Mercury levels are strongly correlated with the length of the fish because longer fish are older and have had more time to accumulate mercury.
	www.mercuryinschools.uwex.edu /curriculum/hg_in_env.htm (3107 words)

	Mercury
		Mercury is associated with zinc (Zn) and cadmium (Cd), its lighter associates in the same column of the periodic table, which it resembles.
		The density of mercury decreases as the temperature increases, because of the thermal expansion of mercury.
		The mercury evaporates at the cathode spot and condenses on the cool walls of the envelope, controlling the pressure of the mercury, which should be in the neighborhood of 1 mmHg.
	mysite.du.edu /~jcalvert/phys/mercury.htm (10896 words)

	Mercury Exposure
		Synonyms: Bichloride of Mercury; dichloromercury; Corrosive mercury chloride; Corrosive Sublimate; mercury bichloride; Mercury chloride; Mercury chloride (2); Mercuric bichloride; mercuric chloride; Mercury (II) Chloride; Mercuric chloride ; Mercury perchloride; perchloride of mercury; sublimate; TL 898;
		Mercuric chloride is prepared by reacting mercury with chlorine gas or by subliming a mixture of mercuric sulfate and sodium chloride (common salt).
		Synonym: aminomercuric chloride, mercury amide chloride, mercury ammonium chloride, mercuric ammonium chloride.
	www.mercuryexposure.org /index.php?page_id=62 (1307 words)

	Mercury (Element) - Properties Of Mercury, Toxicity
		Mercury is a metallic chemical element identified by the symbol Hg on the periodic table.
		Nearly all mercury exists in the form of a red ore called cinnabar, which is composed of mercury and sulfur.
		The mercury is then removed from the soot by a filter system and purified in a vacuum.
	science.jrank.org /pages/4239/Mercury-Element.html (421 words)

	Basic Information \| Mercury \| US EPA
		Mercury is a naturally occurring element that is found in air, water and soil.
		Mercury is an element in the earth's crust.
		Mercury in the air eventually settles into water or onto land where it can be washed into water.
	www.epa.gov /mercury/about.htm (0 words)

	What is the mercury element?
		Mercury (Hg) in its elemental (pure) form, that is, as a metal is also referred to as metallic mercury.
		The mercury element is shiny, silver-gray metal that is a liquid at room temperature.
		Though the mercury element occurs naturally in the environment it is now mainly released by human activities.
	www.greenfacts.org /mercury/mercury-element.htm (89 words)

	Babies With Beards - About Hirsutism
		Mercury, also called quicksilver, is a chemical element in the periodic table that has the symbol Hg (from the Latinized Greek hydrargyrum, for watery [or liquid] silver) and atomic number 80.
		Mercury is used in dental amalgam as well as thermometers, barometers and other scientific apparatus, although the use of mercury in thermometers has been largely phased out in clinical and scientific environments (in favor of alcohol-filled, digital or thermistor-based replacements) in the interests of health and safety due to the toxicity of the element.
		Because methylmercury and high levels of elemental mercury can be particularly toxic to unborn or young children, organizations such as the U.S. EPA and FDA recommend that women who are pregnant or plan to become pregnant within the next one or two years, as well as young children avoid eating these species in large amounts.
	www.secretlair.com /babieswithbeards/mercury.shtml (2893 words)

	mercury - Search Results - MSN Encarta
		Mercury (planet), second smallest of the planets in the solar system.
		Mercury orbits closest to the Sun of all the planets, at an average distance...
		Mercury (mythology), in Roman mythology, messenger of the gods, the son of the god Jupiter and of Maia, the daughter of the Titan Atlas.
	ca.encarta.msn.com /mercury.html (213 words)

	Quicksilver, the Element Mercury
		Mercury, the element acquired the name "quicksilver" because of its liquid, fast flowing properties.
		Mercury is the only metal that, at room temperature, remains a liquid.
		Mercury vapor lighting is common in street lights and hallways.
	www.indepthinfo.com /mercury/quicksilver.shtml (451 words)

	Mercury, an element that comes from both human-made and natural sources, acts as a nerve toxin which may impair the way ...
		Mercury metal, which is a silver-gray liquid, is harmful to humans when it is exposed into the air and consequently breathed into the lungs.
		Individuals are exposed to mercury in dental amalgams through inhalation of air containing elemental mercury during the filling procedure and, ingestion of amalgam particles through saliva or during restorative procedures (Subcommittee on Risk Assessment of the Committee to Coordinate Environmental Health and Related Programs, 1999).
		Elemental mercury must be placed in a sealed container for collection by the EHSS (Environmental Health and Safety Services Laboratory Safety Division) (Virginia Tech University, 1997).
	www.uvm.edu /~vlrs/doc/mercury.htm (1541 words)

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