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Topic: Radon fluoride


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  AllRefer.com - radon, Compound & Element (Compounds And Elements) - Encyclopedia
The chief use of radon is in the treatment of cancer by radiotherapy.
Radon is produced by the disintegration of its precursors in minerals, from which it diffuses in small amounts.
The name radon was adopted in the 1920s to refer to all the isotopes of the element, although the name emanation and symbol Em are sometimes used.
reference.allrefer.com /encyclopedia/R/radon.html   (392 words)

  
 radon   (Site not responding. Last check: 2007-11-05)
Radon is a chemical element in the periodic table that has the symbol Rn and atomic number 86.
A radioactive noble gas that is formed by the disintegration of radium, radon is one of the heaviest gases and is considered to be a health hazard.
Radon is sometimes produced by a few hospitals for therapeutic use by pumping its gas from a radium source and storing it in very small tubes which are called seeds or needles.
www.yourencyclopedia.net /Radon.html   (649 words)

  
 Radon - Wikipedia, the free encyclopedia
Indoors radon is estimated to cause about 21,000 lung cancer deaths per year in the U.S. Radon is the second leading cause of lung cancer in the U.S. today.
Radon is of greatly increased danger to smokers.
Radon was a popular additive in products like toothpaste, hair creams and even food items in the early 20th century, due to its supposed curative powers.
en.wikipedia.org /wiki/Radon   (1286 words)

  
 VIAS Encyclopedia: Radon
Radon is present in some spring waters, such as those at Hot Springs, Arkansas.
At ordinary temperatures radon is a colorless gas; when cooled below the freezing point, radon exhibits a brilliant phosphorescence which becomes yellow as the temperature is lowered and orange-red at the temperature of liquid air.
Radon is still produced for therapeutic use by a few hospitals by pumping it from a radium source and sealing it in minute tubes, called seeds or needles, for application to patient.
www.vias.org /encyclopedia/persys_rn.html   (413 words)

  
 Radon fluoride - Wikipedia, the free encyclopedia
Radon fluoride is a compound of radon, a noble gas.
Radon reacts readily with fluorine to form a solid compound, but this decomposes on attempted vaporization and its exact composition is uncertain.
The usefulness of radon compounds is limited because the radioactivity of radon: the longest-lived isotope has a half-life of only 3.82 days.
en.wikipedia.org /wiki/Radon_fluoride   (80 words)

  
 RADON FACTS AND INFORMATION   (Site not responding. Last check: 2007-11-05)
Radon is a chemical_element in the periodic_table that has the symbol Rn and atomic_number 86.
A radioactive noble_gas that is formed by the disintegration of radium, radon is one of the heaviest gases and is considered to be a health hazard.
There are similar radon treatment centers in the U.S. http://www.radonmine.com/index.html and elsewhere which are usually billed as 'health centers', though the health benefits of low-levels of radiation are seen as dubious, at best, by most radiologists.
www.witwib.com /index.php?s=radon   (1235 words)

  
 It's Elemental - The Element Radon
Radon was discovered by Friedrich Ernst Dorn, a German chemist, in 1900 while studying radium's decay chain.
However, since radon is a gas, it is easily inhaled and living tissue is directly exposed to the radiation.
Radon seeps into houses as a result of the decay of radium, thorium or uranium ores underground and varies greatly from location to location.
education.jlab.org /itselemental/ele086.html   (237 words)

  
 informationsphere.com: Radon
Radon is a naturally occurring radioactive gas that is produced by the radioactive decay of uranium present in all earth materials such as rocks, soils, brick and concrete.
Radon is present in all parts of the UK, but in the most populous areas the levels are quite low.
Radon levels in homes vary during the day, from one day to the next, and from winter to summer, mainly because of temperature differences between indoors and outdoors.
www.informationsphere.com /html/191.htm   (326 words)

  
 F. Davies Hyper-Text Untitled Document
At ordinary temperatures radon is a colorless gas; when c6oled below the freezing point, radon exhibits a brilliant phosphorescence which becomes yellow as the temperature is lowered and orange-red at the temperature of liquid air.
Radon is still produced for therapeutic use by a few hospitals by pumping it from a radium source and sealing it in minute tubes, called seeds or needles, for applica- tion to patients.
Radon buildup is also a health considerafion in uranium mines.
pte.8k.com /EL086.html   (418 words)

  
 Radon biography .ms   (Site not responding. Last check: 2007-11-05)
Other measures, such as blocking fissures and vents through which radon reaches from the ground, may have to be taken.
The solid decay products of radon (polonium...) staying in the atmosphere in dust form can fix themselves on the microparticles in tobacco smoke, which then enter the lungs.
There are simillar radon treatment centers in the U.S. and elsewere which are usually billed as 'health centers' etc.
radon.biography.ms   (992 words)

  
 radon   (Site not responding. Last check: 2007-11-05)
Radon - (from radium; called niton at first, L. nitens, shining), Rn; at.
On the average, one part of radon is present to 1 x 10^21 part of air.
Radon is available at a cost of about $4/m Ci.
www.speclab.com /elements/radon.htm   (422 words)

  
 The Phosphate Fertilizer Industry: An Environmental Overview
Today, with the development of sophisticated air-pollution control technology, less of the fluoride escapes into the atmosphere, and the type of pollution that threatened the survival of some communities in the 1950s and 60s, is but a thing of the past (at least in the US and other wealthy countries).
Fluoride has been, and remains to this day, one of the largest environmental liabilities of the phosphate industry.
It is estimated that, as a result of fluoride contamination, "the cattle population of Polk County dropped 30,000 head" between 1953 and 1960, and "an estimated 150,000 acres of cattle land were abandoned" (Linton 1970).
www.fluoridealert.org /phosphate/overview.htm   (5196 words)

  
 Radon
Radon, a known cancer-causing agent, is prevalent in the area's shale-laden soil.
Radon is a colorless, odorless and tasteless gas that migrates through the soil and rocks and becomes part of the atmosphere, and it could be effecting your...
Radon occurs from the natural decay of uranium and is especially common in the Rocky Mountains.
carcinogens.cancer-help.org /Radon.html   (9244 words)

  
 radon - definition by dict.die.net   (Site not responding. Last check: 2007-11-05)
radon n : a radioactive gaseous element formed by the disintegration of radium; the heaviest of the inert gasses; occurs naturally (especially in areas over granite) and is considered a hazard to health [syn: Rn, atomic number 86]
Of the twenty known isotopes, the most stable is Rn-222 with a half-life of 3.8 days.
As a noble gas, it is effectively inert, though radon fluoride has been synthesized.
dict.die.net /radon   (94 words)

  
 Fluoride
It is characterized by diffuse opacities and under-mineralized enamel.
Fluorides are cumulative and build-up steadily with ingestion of fluoride from all sources, which include not just water but the air we breathe and the food we eat.
The use of fluoride toothpaste in dental hygiene and the coating of teeth are further sources of substantial levels of fluoride intake.
tuberose.com /Fluoride.html   (12409 words)

  
 MoonDragon's Health & Wellness: Nutrition - Choosing The Best Water: Types of Water
Opponents to fluoridation contend that when fluoridated water is consumed regularly, toxic levels of fluorine, the poisonous substance from which fluoride is derived, build up in the body, causing irreparable harm to the immune system.
It is known, however, that chronic fluoride use results in numerous health problems, including osteoporosis and osteomalacia, and also damages teeth, and leaves them mottled.
Fluoride is the 13th most widely distributed element on earth, so it can turn up just about anywhere - in vegetables and meats, for example.
www.moondragon.org /health/nutritionbasics/water.html   (3049 words)

  
 Group_18_element   (Site not responding. Last check: 2007-11-05)
The noble gases are the chemical elements in group 18 (old-style Group 0) of the periodic table.
The noble gases were previously referred to as inert gases, but this term is not strictly accurate because several of them do take part in chemical reactions.
Radon has reacted with fluorine to form radon fluoride (RnF) which glows with a yellow light in the solid state.
www.usedaudiparts.com /search.php?title=Group_18_element   (371 words)

  
 index
Measure A does not prohibit fluoride, however, the chemical the City has chosen (hydrofluorosilicic acid) to use for fluoridation has never been approved by the FDA for the health claims made and would be prohibited.
Yet proponents are saying that fluoridating city water is a "cost effective" way to treat dental decay in low income children.
A: Yes, especially when dentists are treating more and more children for overexposure to fluoride, and there's not practical way to control the quantity of fluoride we ingest (already in food products made with fluoridated water, pesticide residues and natural sources).
www.geocities.com /reddingsafewater   (2091 words)

  
 Regional Planners OK Fort Meade Phosphate Gypsum Stack
Barnett, a retired state air pollution investigator, claimed the new stack could pollute the underground aquifer and release large concentrations of wind-blown radon and fluoride gas into the city, only 1 1/2 miles away.
Gypsum is a chemical byproduct created during the manufacturing of phosphoric acid, used to produce fertilizer from phosphate rock.
Among the conditions placed for approval were closing the old stack as soon as possible, lining the bottom of the new stack with a thick plastic liner and limiting it's height to 158 feet.
www.fluoridealert.org /pollution/1244.html   (652 words)

  
 Radon   (Site not responding. Last check: 2007-11-05)
} Radon is a chemical element in the periodic table that has the symbol Rn and atomic number 86.
Since 1985, millions of homes have been tested for radon in the U.S. Compounds
There are similar radon treatment centers in the U.S. http://www.radonmine.com/index.html and elsewhere which are usually billed as 'health centers', though the health benefits of low-levels of radiation are seen as dubious by most radiologists.
www.worldhistory.com /wiki/R/Radon.htm   (1340 words)

  
 Water Quality Databases..., 1995 Annual Report   (Site not responding. Last check: 2007-11-05)
Radon (222Rn) Study: In 1992, 222Rn analyses were completed on samples taken from 153 public water supplies using a single hydrogeologic formation for their source of drinking water.
Very few sources (4 samples) exceeded 1000 pCi/L. Although the majority of groundwater sources were high in radon, only 28% of the public water supplies in the study exceeded the proposed drinking water standard of 300 pCi/L in samples collected from the distribution systems.
Iowa Rural Radon Survey: A waterborne radon (222Rn) survey of private Iowa wells was conducted in 1991 using the SWRL sampling frame.
www.cheec.uiowa.edu /95report/water.html   (2762 words)

  
 EMAIL IN RE: FLUORIDATION BILL
Hirzy had previously represented the union of EPA scientists before the U.S. Senate subcommittee hearing on Arsenic, Radon, and Fluoride on June 29, 2000, calling for a moratorium on all fluoridation until proper toxicity testing has been performed.
The Masters and Coplan studies showed a doubling of the incidence of the danger level of lead in children's blood when silicofluoride or hydrofluosilicic acid is present in the public drinking water.
Asked to respond to the statements that the actual substances used to fluoridate public water have not been tested, Cathy Mudge, the CDA representative, stated, "Fluoride is fluoride is fluoride," that the CDA's position is that the silicofluorides dissociate in water so that it is the same as sodium fluoride.
www.citizenshealth.org /fl_bill.htm   (655 words)

  
 What are you really drinking? This is About Your Tap Water!!
Natural occurring substances include radon, fluoride, arsenic, iron, lead, copper, and other heavy metals.
Other contaminates, such as fertilizers asbestos, cyanides, herbicides, pesticides, and industrial chemicals, may leach into ground water through the soil, or into any tap water from pluming pipes still other substances, including chlorine, carbon, lime, phosphates, soda ash and aluminum sulfate, are intentionally added to the public water supplies.
More than half the cities in the US fluoridate their water supplies, although many ailments and disorders (including Down syndrome, mottled teeth, and cancer) have been link to fluoridated water.
montyserve.8m.com /info/water.htm   (304 words)

  
 Radon: Periodic Table of the Elements   (Site not responding. Last check: 2007-11-05)
Many isotopes of Radon are formed by breakdown of radioactive elements in the ground, and are radioactive themselves.
Radon can build up in unventilated areas, such as mines (especially uranium mines) and basements.
It is dangerous if it or its radioactive daughter products are inhaled.
www.concentric.net /~noshadow/table/Rn.shtml   (80 words)

  
 GSA - Request for Test Kit   (Site not responding. Last check: 2007-11-05)
A test kit with detailed instructions will be sent to you.
pH, Hardness, Nitrate, Nitrite, Coliform Bacteria, E Coli Bacteria, Fluoride, and Calcium
Coliform Bacteria and E Coli Bacteria, Nitrate, Nitrite, Total Nitrate/Nitrite, First Draw Lead, Fluoride.
www.mv.com /ipusers/gsa/request.html   (137 words)

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