21. Radon radon. March 17, 2003. up WHAT IS radon? radon is a radioactive gasthat is found in the earth's rock and soil. It is formed by the http://www.lungusa.org/air/envradon.html

Home Air Quality Indoor Air Quality Radon Search Site Local Search Enter Your ZIP Radon March 23, 2003 Other Articles You Might Like to Read Radon Fact Sheet Home Indoor Air Quality 87 Percent of American Homeowners Don't Know Air Pollution Inside The Home May Be Worse Than Outdoors What Is Radon? ... What Can You Do To Reduce High Levels Of Indoor Radon? WHAT IS RADON? Radon is a radioactive gas that is found in the earth's rock and soil. It is formed by the natural breakdown of radium, which is itself a decay product of uranium. As radon decays, it forms radioactive by-products called either "progeny," "decay products" or"daughters" which, if inhaled, can damage lung tissue and cause lung cancer. Invisible and odorless, radon is a health hazard when it accumulates to high levels inside homes or other structures. And it is deadly. Indoor radon exposure is estimated to be the second leading cause of lung cancer deaths each year in the United States. Cigarette smoking is responsible for the large majority (87 percent) of lung cancer deaths. HOW SERIOUS A PROBLEM IS RADON IN THE U.S.?

22. American Lung Association® Fact Sheet: Radon American Lung Association® Fact Sheet radon. March 17, 2003. radon enters a homethrough cracks in walls, basement floors, foundations and other openings. http://www.lungusa.org/air/radon_factsheet99.html

Home Air Quality Indoor Air Quality Radon Fact Sheet Search Site Local Search Enter Your ZIP Radon March 23, 2003 Other Articles You Might Like to Read Radon Home Indoor Air Quality 85% of Americans Don't Know the Air in Their Homes May Be Hazardous to Their Health December 2000 Update Radon is a colorless, odorless gas that is a decay product of uranium and occurs naturally in soil and rock. Radon gas has been identified as a leading cause of lung cancer, second only to cigarette smoking, and it is responsible for thousands of deaths annually. Radon breaks down into components called radon progeny, sometimes called "radon daughters," which emit high-energy alpha particles. These emissions raise the risk of lung cancer. The main source of high-level radon pollution in buildings is surrounding uranium-containing soil such as granite, shale, phosphate and pitchblende. Radon enters a home through cracks in walls, basement floors, foundations and other openings. It may also contaminate the water supply, especially in private wells. Over a person's lifetime, particulate radon progeny can enter the lungs, attach themselves, and may eventually lead to lung cancer. Radon is believed to cause between 15,000 and 21,000 U.S. deaths from lung cancer annually.

23. New Page 1 best viewed with MSIE 5.0 or greater © 2001Gainesvillebandpage.com. http://www.radon222.com/

24. Associated Radon Services radon testing, measurement and reduction programs for all size facilities, including apartments and Category Science Environment radon Mitigation and Testing......IAQ Engineers,radon Consultants, radon Testing and radon MitigationSpecialists radon risk analysis and liability control. http://www.radonserv.com/

USEPA Links Home Page Search EPA Radon Facts Radon Home Page ... Radon in Schools EPA Radon Guides Citizens' Guide Consumers' Guide Tenants' Guide Physicians' Guide ... En Espanol Articles Radon: A National Environmental Health Problem Florida DOH Radon Resources Certified Radon Measurement Business Certified Radon Mitigation Contractors FL Mandatory Radon Testing Info Contact Florida Radon Office ... FL Radon Testing by Zip Code DOH Database Other Resources Radon Test Kits Slide Presentation BEIR IV Report Lung Cancer Study ... Radon Levels by State Welcome! Associated Radon Services offers professional, experienced (since 1990) radon measurement and radon control services to a wide base of clients worldwide. In addition to information about our services , we have included helpful resources about the dangers of radon. Our About Radon page gives a quick overview of Radon and the health risks it poses. Our on line Discussion Group , moderated by our Senior Consultant, is a great source of technical radon risk analysis and reduction information. Links to other related sites are located in the margins of each page for quick, easy reference.

25. Radon: Radioattivitˆ Ambiente E Salute http://www.geocities.com/qanto/

C'era una volta... Via U. Saba, 83 00144 Roma Tel: 06 5016961 L'angolo dei bimbi Other Links Scriveteci !!! qanto@yahoo.com Date Last Modified: 15 aprile1999

26. MEDLINEplus: Radon Other health topics A B C D E F G H I J K L M N O P Q R S T U V W XYZ List ofAll Topics. radon. Search MEDLINE for recent research articles on • radon. http://www.nlm.nih.gov/medlineplus/radon.html

Skip navigation Other health topics: A B C D ... List of All Topics Radon Contents of this page: News General/Overviews Pictures/Diagrams Prevention/Screening ... Children Search MEDLINE for recent research articles on Radon You may also be interested in these MEDLINEplus related pages: Lung Cancer Radiation Exposure Poisoning, Toxicology, Environmental Health Latest News EPA Administrator Whitman Urges Home Testing for Radon, Commerates National Radon Action Month (01/14/2003, Environmental Protection Agency) General/Overviews Citizen's Guide to Radon (Environmental Protection Agency) Frequently Asked Questions About Radon (Environmental Protection Agency) Public Health Statement for Radon (Agency for Toxic Substances and Disease Registry) Radon (Agency for Toxic Substances and Disease Registry) Radon Myths and Facts (Environmental Protection Agency) Also available in: Spanish Tox Town (National Library of Medicine) - requires Flash plug-in TOXNET Databases (National Library of Medicine) - journal citations and data files on toxicology and related subjects Pictures/Diagrams EPA Map of Radon Zones [in United States] (Environmental Protection Agency) Prevention/Screening Building a New Home: Have You Considered Radon?

27. Radon Johann radon. Born 16 Dec Johann radon attended school in Leitmeritz(now Litomerice) in Bohemia between 1897 and 1905. He then entered http://www-gap.dcs.st-and.ac.uk/~history/Mathematicians/Radon.html

Johann Radon Born: 16 Dec 1887 in Tetschen, Bohemia (now Decin, Czech Republic) Died: 25 May 1956 in Vienna, Austria Click the picture above to see two larger pictures Show birthplace location Previous (Chronologically) Next Biographies Index Previous (Alphabetically) Next Main index Johann Radon attended school in Leitmeritz (now Litomerice) in Bohemia between 1897 and 1905. He then entered the University of Vienna where he was awarded a doctorate in 1910 for a dissertation on the calculus of variations In 1919 Radon became assistant professor at Hamburg becoming a full professor in Greifswald in 1922. He taught in Erlangen in 1925, then from 1928 until 1945 he worked at the University of Breslau. He was appointed to the University of Vienna in 1947 and he remained there for the rest of his life. Radon applied the calculus of variations to differential geometry which led to applications in number theory . He discovered curves whch are now named after him. His best known results involve combining the integration theories of Lebesgue and Stieltjes Article by: J J O'Connor and E F Robertson Click on this link to see a list of the Glossary entries for this page List of References (6 books/articles) A Poster of Johann Radon Mathematicians born in the same country Previous (Chronologically) Next Biographies Index Previous (Alphabetically) Next Main index History Topics Societies, honours, etc.

28. Virtual Hospital: Radon Occurence And Health Risk For Providers. radon Occurrence and Health Risk. R. William 1. What arethe chemical and radiologic characteristics of radon? radon is http://www.vh.org/adult/provider/preventivemedicine/Radon/HealthRisk.html

For Providers Radon Occurrence and Health Risk R. William Field, Ph.D. Research Scientist College of Public Health Department of Epidemiology University of Iowa Hospitals and Clinics Peer Review Status: Internally Peer Reviewed Creation Date: June 1999 Last Revision Date: June 1999 Source Material: Occupational Medicine Secrets, Hanley and Belfus, Philadelphia, 1999 1. What are the chemical and radiologic characteristics of radon? Rn), formed in the U decay chain, is the most important isotope because of its relatively long half-life of 3.82 days. The short half-life beta- and gamma-emitting decay products of Rn achieve equilibrium with the parent isotope within several hours. 2. Draw the 226Ra decay chain. Include the half-life and major emission type of each decay product. 3. What are Rn progeny? Why are they important? Radon-222 progeny is another name for the Rn decay products or Rn daughters. Radon-222 progeny rather than Rn gas deliver the actual radiation dose to lung tissues. The solid airborne Rn progeny, particularly

29. Howstuffworks "How Radon Works" In places where uranium is common in the soil, radon is something that you hearabout in the news all the time. Even though radon is. How radon Works. http://home.howstuffworks.com/radon.htm

ComputerStuff AutoStuff ElectronicsStuff ScienceStuff ... PeopleStuff Categories Food Home Appliances Home Improvement Home Office ... PCs Sponsored By: Explore Stuff Big List of Articles Get the Newsletter Shop or Compare Prices Orbitz - Plan a Trip! ... Home Security How Radon Works by Marshall Brain and Craig Freudenrich, Ph.D. What is Radon? How Does Radon Get into a Home? How Do You Test for Radon? ... Shop or Compare Prices If you live in certain parts of the United States, you might be aware of the threat that radon gas poses. Radon gas is radioactive, and in tightly insulated houses it can accumulate to concentrations that pose a health threat. If you inhale the gas into your lungs, its decay can increase your chance of getting lung cancer. A study reported in 1990 by the National Safety Council estimated that about 14,000 deaths a year could be attributed to radon, and that the number could range from 7,000 to 30,000. In this edition of How Stuff Works , we'll talk about what radon is, how you can find it in your home and what the health risks are for it. Next Page HSW Home Table of Contents: What is Radon?

30. Howstuffworks "How Radon Works" In places where uranium is common in the soil, radon is a popular topic of discussion.Even though radon is. Main Home Home Security How radon Works. http://www.howstuffworks.com/radon.htm

ComputerStuff AutoStuff ElectronicsStuff ScienceStuff ... PeopleStuff Categories Food Home Appliances Home Improvement Home Office ... PCs Sponsored By: Explore Stuff Big List of Articles Get the Newsletter Shop or Compare Prices Orbitz - Plan a Trip! ... Home Security How Radon Works by Marshall Brain and Craig Freudenrich, Ph.D. What is Radon? How Does Radon Get into a Home? How Do You Test for Radon? ... Shop or Compare Prices If you live in certain parts of the United States, you might be aware of the threat that radon gas poses. Radon gas is radioactive, and in tightly insulated houses it can accumulate to concentrations that pose a health threat. If you inhale the gas into your lungs, its decay can increase your chance of getting lung cancer. A study reported in 1990 by the National Safety Council estimated that about 14,000 deaths a year could be attributed to radon, and that the number could range from 7,000 to 30,000. In this edition of How Stuff Works , we'll talk about what radon is, how you can find it in your home and what the health risks are for it. Next Page HSW Home Table of Contents: What is Radon?

31. Chemistry : Periodic Table : Radon : Key Information This WebElements periodic table page contains key information for theelement radon. radon, radon, radon, radon (emanio), Rádon, radón, radon. http://www.webelements.com/webelements/elements/text/Rn/key.html

Chemistry: WebElements Periodic Table Professional Edition Radon : key information Pro Home Scholar Home Books WebElements CD ... Help Radon radon Radon radon (emanio) Radon Online discussions index Index for radon background Key data; description History radon around us Uses Geology Biology radon compounds Reactions of radon Compounds Bond enthalpies Radii in compounds ... Reduction potentials electronic properties Electronic configuration Ionization energies Electron affinities Electronegativities ... Valence shell radii physical properties Bulk properties (density, resistivity, etc.) Thermal properties (melting point, etc.) Thermodynamic properties crystallography Crystal structure [view VR world] [view pdb image] nuclear properties NMR Naturally occurring isotopes Radioisotopes WebElements Drive traffic to your site by sponsoring radon WebElements online book store PalmElements for your Palm WapElements for your phone Acknowledgements Help About WebElements WebElements wall chart Sign the guest book FlashElements Search by keywords: Radon Rn The essentials Name : radon Symbol : Rn Atomic number Atomic weight CAS Registry ID Group number ... Group name : Noble gas Period number Block : p-block Description Standard state : gas at 298 K (the heaviest known mononuclear gas at 298 K) Colour : colourless Classification : Non-metallic Here is a brief description of radon.

32. Chemistry : Periodic Table : Radon : Index Chemistry WebElements Periodic Table Professional Edition radon index. radonspeak radon (female voice) speak radon (male voice). 86 Rn 222. http://www.webelements.com/webelements/elements/text/Rn/

Chemistry: WebElements Periodic Table Professional Edition Radon : index Pro Home Scholar Home Books WebElements CD ... Help Radon radon Radon radon (emanio) Radon Online discussions index Index for radon background Key data; description History radon around us Uses Geology Biology radon compounds Reactions of radon Compounds Bond enthalpies Radii in compounds ... Reduction potentials electronic properties Electronic configuration Ionization energies Electron affinities Electronegativities ... Valence shell radii physical properties Bulk properties (density, resistivity, etc.) Thermal properties (melting point, etc.) Thermodynamic properties crystallography Crystal structure [view VR world] [view pdb image] nuclear properties NMR Naturally occurring isotopes Radioisotopes WebElements Drive traffic to your site by sponsoring radon WebElements online book store PalmElements for your Palm WapElements for your phone Acknowledgements Help About WebElements WebElements wall chart Sign the guest book FlashElements Search by keywords: Radon Rn Index of properties This page has links to all the properties of radon included within WebElements.

33. AARST | American Association Of Radon Scientists And Technologists American Association of radon Scientists and technologists. AARST is a voluntary professional association Category Science Environment Air Quality radon......AARST represents your voice as we meet the wide range of challenges facingradon professionals and the community. Latest on radon Risk Science. http://www.aarst.org/

Become an AARST Member! AARST represents your voice as we meet the wide range of challenges facing radon professionals and the community. AARST is a non-profit organization with a leadership that is democratically elected by the members. Furthermore, membership allows you to gain updated educational, technical and professional information that serves to enhance and expand opportunities while promoting professionalism and ethical practice for consumers. AARST Mission "AARST" is a nonprofit, professional organization of members who are dedicated to the highest standard of excellence and ethical performance of radon measurement, mitigation and transfer of information for the benefit of members, consumers and the public at large." AARST - Briefly Speaking Table of Contents Working Together to Save Lives! Latest on Radon Risk Science If you no longer want to receive this newsletter by email, please reply with the word

34. Radon - The Invisible Intruder Report from the Office of New York State Attorney General (1996) on the dangers of radon, testing, Category Science Environment Air Quality radon......radon The Invisible Intruder. Attorney General of New York State.by Jeanette radon The Invisible Intruder. What is radon? radon is http://www.oag.state.ny.us/environment/radon96.html

Home Press Releases Attorney General's Page Tour the AG's Office ... Index Updated 1-24-03 Radon: The Invisible Intruder Attorney General of New York State by Jeanette E. Barnes, Science Aide Michael H. Surgan, Ph.D., Chief Scientist Environmental Protection Bureau February 1996 Revision Contents Radon: The Invisible Intruder What is radon? What are the health hazards of exposure to radon? How are people exposed to radon? ... Technical Documents Radon: The Invisible Intruder What is radon? Radon is a colorless, odorless, radioactive gas which is created naturally by the breakdown of uranium and radium. Radon gas is continuously released from rocks and soil containing these two elements. Uranium and radium may be found in almost all soil and rock, but are most often associated with those containing granite, shale, and phosphate. Once formed, radon itself decays into other radioactive elements, known as "radon daughters" or "progeny". The rate at which a radioactive element decays is expressed as its half-life. (A half-life is the time it takes for half of a radioactive element in a sample to decay into another element.) Radon has a half-life of about three days; its daughter particles all have half-lives of less than half an hour. What are the health hazards of exposure to radon?

35. What Are The Radon Progeny (formerly Radon Daughters)? A chart listing all of the decay products of radon gas in their order of appearance. Atomic mass, Category Science Environment Air Quality radon......Introducing the radon Progeny (formerly called radon Daughters). pour la version française . The chart below lists all of the http://www.ccnr.org/radon_chart.html

Introducing the Radon Progeny (formerly called Radon Daughters) The chart below lists all of the decay products of radon gas (radon-222) in their order of appearance. They are called the "radon progeny" (formerly "radon daughters"). Each radioactive element on the list gives off either alpha radiation or beta radiation and sometimes gamma radiation too thereby transforming itself into the next element on the list. Lead-206, the last element on the list, is not radioactive. It does not decay, and therefore has no half-life. When radon gas is allowed to build up in an enclosed space, such as a mine shaft or basement, the radioactive hazard increases enormously because of the build-up of radon progeny. Conversely, when radon gas migrates through the atmosphere, the solid radon progeny are deposited on the soil and water below, entering into the food chain and hence the bodies of birds, animals, fish and insects. NOTES ON THE CHART The vertical axis measures the MASS NUMBER, while the horizontal axis measures the ATOMIC NUMBER. DIAGONAL ARROWS indicate alpha decay while HORIZONTAL ARROWS indicate beta decay.

36. The Radon Brothers! A House Full Of Radon Audio and video comedy Tom Green style but done with a twist of radon.Category Recreation Humor Audio and Video Clips......The radon Brother's showcase of comedy video clips and audio from the streetsof the USA. Showing life. Welcome to the radon Brothers site! http://www.radonbrothers.com/

Welcome to the Radon Brothers site! November 7, 2002 - Well nothing new to report really. I (Raymond) am living in Orlando now and studying film and video production. We'll be trying to get some new updates asap. I might be revamping the site a little and might be making a movie from a script that me and Lenny wrote a couple years ago. If that happens, we'll feature the movie on the site here. RadonBrothers.com was ranked #1 on comedy-zone.net. Please VOTE for us! Section Status Mangina Monologues! Active The Fans Active Merchandise Active Guest Book Active Join the list! We'll tell you what's up! SIGN UP var pic1=eval('document.'+_all+'pic1'+_style); FastCounter by bCentral

37. Radon Data tables and historic information.Category Science Chemistry Elements radon......radon. It is essentially inert and occupies the last place in the zero groupof gases in the Periodic Table. Since 1923, it has been called radon. http://www.scescape.net/~woods/elements/radon.html

R ADON General States Energies Reactions ... History General Name Radon Symbol Rn Atomic number Atomic weight Density @ 293 K 0.00973 g/cm3 Atomic volume 50.5 cm3/mol Group Noble Gas Discovered Back to the top States State (s, l, g) g Melting point 202.2 K Boiling point 211 K Heat of fusion 2.890 kJ/mol Heat of vaporization 16.40 kJ/mol Back to the top Energies 1st ionization energy 1037 kJ/mole Electronegativity 2nd ionization energy kJ/mole Electron affinity kJ/mole 3rd ionization energy kJ/mole Specific heat 0.09 J/gK Heat atomization kJ/mole atoms Back to the top Shells Electron configuration [Xe] 4f14 5d10 6s2 6p6 Minimum oxidation number Maximum oxidation number Minimum common oxidation number Maximum common oxidation number Back to the top Structure Color colorless Uses earthquake prediction Toxicity Hardness mohs Characteristics Radioactive,air pollutant Back to the top Reactions Reaction with air none Reaction with 6M HCl none Reaction with 6M HCl none Reaction with 15M HNO3 none Reaction with 6M NaOH none Back to the top Other Forms Number of isotopes Hydride(s) Oxide(s) Chloride(s) Back to the top Radius Ionic radius (2- ion) pm Ionic radius (1- ion) pm Atomic radius pm Ionic radius (1+ ion) pm Ionic radius (2+ ion) pm Ionic radius (3+ ion) pm Back to the top Conductivity Thermal conductivity J/m-sec-deg Electrical conductivity 1/mohm-cm Polarizability 5.3 A^3

38. Florida Radon Program Index radon. Overview About the radon program. radon In Florida Disscusionof radon issues in Florida. radon Measurement and Mitigation http://www.doh.state.fl.us/environment/facility/radon/

Radon Overview About the radon program. Radon In Florida Disscusion of radon issues in Florida Radon Measurement and Mitigation Businesses List of certified radon businesses Florida Administrative Code 64E-5 Parts X and XII Radon's Rules and Regulations Forms Used by the Radon Program Business and individual certification applications, measurement and mitigation reports Radon Resistant Construction and Radon Mitigation Information Developed by Department of Community affairs, Codes and Standards Section DCA Radon Protection Maps Identify areas in the state where additional radon resistant construction features in new construction are recommended Mandatory Radon Testing Information Guidance, instructions and requirements for facilities required to test for radon. Become Certified to Provide Radon Services Overview of procedures for applying for individual and business certifications. Contact this Office Request Radon Information List of publications available from the department.

39. Radon California Certified Providers of radon Services. Testers PDF FormatTesters -Word Format. A Brief Explanation EPA’s Map of radon Zones. http://www.dhs.cahwnet.gov/ps/ddwem/environmental/radon/radon.htm

Radon What is Radon? Free Short-term Radon Test Providers of Radon Services EPA's Radon Potential Map of California and Explanation ... DHS IAQ Unit, Mold, Asbestos The California Department of Health Service’s (DHS) Radon Program goals are to educate and increase the public awareness of the risks of radon in indoor air. The program promotes radon testing of homes, businesses, and schools. The program also works to identify areas with the potential for elevated levels of radon in indoor air due to geology, etc. The Program is responsible for listing individuals certified to perform radon services in California. What is Radon? Radon is a naturally occurring colorless, tasteless, and odorless gas that comes from the decay of uranium found in nearly all soils. It enters buildings byway of the ground through cracks and openings in the foundations. Once inside the radon can become trapped and unless the building is properly ventilated to remove the gas, it can become a health hazard. Long-term exposure to elevated levels of radon increase ones risk of contracting lung cancer. The levels of radon vary throughout the country and the concentrations entering homes varies from home to home.

40. Chemical Elements.com - Radon (Rn) Basic information, atomic structure, and table of isotopes.Category Science Chemistry Elements radon......Name radon Symbol Rn Atomic Number 86 Atomic Mass (222.0) amu Melting Point71.0 °C (202.15 °K, -95.8 °F) Boiling Point -61.8 °C (211.35 °K, -79.24 http://www.chemicalelements.com/elements/rn.html

Home About This Site Comments Help ... Window Version Show Table With: Name Atomic Number Atomic Mass Electron Configuration ... Crystal Structure Element Groups: Alkali Metals Alkaline Earth Metals Transition Metals Other Metals ... Citing This Page Basic Information Name: Radon Symbol: Rn Atomic Number: Atomic Mass: (222.0) amu Melting Point: Boiling Point: Number of Protons/Electrons: Number of Neutrons: Classification: Noble Gas Crystal Structure: Cubic Density @ 293 K: 9.73 g/cm Color: colorless Atomic Structure Number of Energy Levels: First Energy Level: Second Energy Level: Third Energy Level: Fourth Energy Level: Fifth Energy Level: Sixth Energy Level: Isotopes Isotope Half Life Rn-211 14.6 hours Rn-212 24.0 minutes Rn-217 0.6 milliseconds Rn-218 35.0 milliseconds Rn-219 3.96 seconds Rn-220 55.61 seconds Rn-222 3.82 days Facts Date of Discovery: Discoverer: Fredrich Ernst Dorn Name Origin: From radium Uses: treatment of cancer Obtained From: decay of radium Related Links Note: The external links below are not a part of this site and their content is not the responsibility of this site Radon Information From the US Geologic Survey A Citizen's Guide to Radon From The U.S. Environmental Protection Agency

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