氡是從鐳-226的放射性衰變所產生的。鐳-226出現在鈾礦、磷鹽岩、頁岩以及花崗岩、片麻岩和片岩等火成岩及變質岩中。石灰石等較常見岩石中則含有較少量的氡。[62]每平方英里、深6英尺(2.6平方公里、深15厘米)的地表土壤內含有約1克的鐳,這些鐳向大氣釋放少量的氡。[3]全球土壤每年估計釋放24億居里(90 TBq)的氡。[63]. 不同地方的氡濃度可以有巨大的差異。戶外空氣中濃度介乎1至100 Bq/m3,在海面則更低(0.1 Bq/m3)。在洞穴、通風的礦井以及不通風的房屋內,濃度可高達20至2,000 Bq/m3。[64]美國鈾礦作業守則規定氡濃度須在一個「工作水平」以下。中国铀矿冶EJ/T378-89规定工作场所氡浓度≤3700Bq/m3,即相当于美国的1WL。1976年至1985年所測量數據顯示,第95百分位水平可以高達近3個工作水平(每升空氣含546 pCi氡-222,即20.2 ...
Indoor radon concentrations are presented as means with standard deviations and geometric means. To consider repeated measures within the same residence, a generalized estimating equation with a linear model was applied according to individual residential environments. To identify factors affecting higher indoor radon concentrations, we divided residences into five groups according to radon concentrations based on indoor radon reference levels as international standards (,74 Bq/m3, 74100 Bq/m3, 100-148 Bq/m3, 148-200 Bq/m3, and ≥200 Bq/m3) and applied a generalized estimating equation based on a multinomial probability distribution with a cumulative probit link function. Spearmans rho was used to analyze correlations among greenery ratio, impermeable layer ratio, and indoor radon concentrations. Decision tree analysis was conducted to highlight factors and to suggest optimal cut point of each parameter affecting high indoor radon concentrations by exhaustive chisquared automatic interaction ...
A radon alleviation framework is any structure or steps proposed to diminish radon focuses in the indoor idea of a building.. The EPA prescribes Radon Mitigation make a move to reduce your homes indoor radon levels, Radon close me if your radon test result is 4 pCi/L or higher.. Radon Framework. A secured level of radon gas is no radon gas. Radon gas is a disease causing professional which causes lung tumor. The US EPA has put it evidently, passing on, "Any radon introduction has some peril of causing lung change. The lower the radon levels in your home, the lower your familys danger of lung hazard." The standard individual gets higher estimations of radiation from the radon levels in their home than from their joined preamble to all other radiation sources, conventional or man-made. Radon Mitigation is a routinely happening aftereffect of the radioactive demolish of Uranium in the earth. Subordinate upon your geographic zone, Radon close me the radon levels of the air you take in outside of ...
Digital Continuous Radon Gas Monitoring with Home Radon Alarm Protect your family from lung cancer from radon gas exposure with the only EPA evaluated radon gas alarm, the Safety Siren Pro 3 Electronic Radon Gas Detector from Family Safety Products. As seen on TV, this is not like a single use radon test detection kit: this digital radon gas monitor for home testing is a continuous radon tester that performs continuous radon gas monitoring. The clear, easily read digital radon level display shows short-term radon levels as well as long-term radon level averages. The Safety Siren electronic radon monitor gives its first radon reading after 48 hours of radon gas sampling. Radon gas in air or water is a health hazard resulting from uranium breaking down in soil. Exposure to radon can cause lung cancer. Continuous home radon monitoring is recommended in high radon areas or when radon mitigation systems are used. Radon gas levels change according to humidity and season. See in.Radon Facts in. below ...
Mike Adams. November is radon awareness month so it is the perfect time of year to consider testing your home. Radon gas is the second leading cause of lung cancer after smoking. It may contribute to as much as 16% of all lung cancers. Radon, when combined with tobacco smoke, including second-hand smoke, can increase the risk substantially. Health Canada estimates that one in three smokers exposed to high radon levels will develop lung cancer.. Radon is a naturally occurring gas found in the ground throughout the world. Most homes that are in contact with the ground will contain some amount of radon gas. Radon becomes more of a concern when it reaches high levels. According to Health Canada about seven per cent of the Canadian homes have radon levels that may be putting residents at risk. Here in the B.C. Interior we have some "hot spot" areas with high radon levels in approximately 40 per cent of homes.. Radon gas is colourless, odourless and tasteless, so the only way to know if the radon ...
Long-term exposure to elevated indoor radon concentrations has been determined to be the second leading cause of lung cancer in adults after tobacco smoking. With the establishment of a National Radon Program in Canada in 2007 thousands of homes across the country have been tested for radon. Although the vast majority of people are exposed to low or moderate radon concentrations; from time to time; there are homes found with very high concentrations of radon. Among those living in homes with very high radon concentrations, it is typically parents of young children that demonstrate a great deal of concern. They want to know the equivalent risk in terms of the lifetime relative risk of developing lung cancer when a child has lived in a home with high radon for a few years. An answer to this question of risk equivalency is proposed in this paper. The results demonstrate clearly that the higher the radon concentration; the sooner remedial measures should be undertaken; as recommended by Health Canada in the
Transport of Radon in soil Part of the radon originating from the decay of radium located in rocks and soil particles is emitted in the pore volume of soil and stones. Due to atmospheric conditions (temperature, air pressure, weather), the radon concentration in a depth of less than one meter varies considerably. With increasing depth, the radon concentration rises to a saturation value.. The permeability of the soil plays a decisive role. Generally, starting from a depth of one meter, the radon concentration in the soil air changes only in a minor way. Due to the half-life (circa 1,600 years) of Radium-226, the parent of radon, the radon soil air concentration is stable over a long term. If the radon concentration of a particular site is known, new measurements are only necessary after significant interventions done in the underground.. Cracks and rifts simplify the transport of radon in the underground. Therefore the local radon concentration can be much higher in the proximity of chasms, ...
As a standard instrument to calibrate the radon monitors, radon chamber is in urgent need with the deepening study on Radon and its progeny. According to the requirement of calibrating the radon monitors and radon detectors, the multifunctional and automatic controlled radon chamber is designed and constructed. By the reason of radon decay, the radon concentration in the chamber is continuously changing. The radon concentration must keep stability and homogeneity in order to calibrate the radon monitors and bio-culture. The supply and control of radon in the chamber is a critical problem in the design of Radon chamber. The paper introduced the mathematic model of dynamic radon replenishment according to the law of radon decay, three time parameters to replenish radon is discussed. The related automatic monitor and control system is developed by this mathematic model, the expected radon concentration can keep stability and homogeneity controlled by the system. The structure of radon chamber and ...
Radon is a deadly gas that can easily accumulate in your newer or older home, whether you have a full or partial basement, crawl space, or cement slab. You may be breathing harmful levels of radon and not know it. Have you tested your house for radon? Purchase a radon test kit today. WHAT IS RADON? Radon is a colorless, odorless tasteless radioactive gas Radon comes from naturally decaying uranium 289 in soil, rocks and water Radon is a known carcinogen Radon is the second leading cause of lung cancer, next to smoking 1 in 15 homes in the U.S. has high levels of radon Radon is found in all 50 states Radon accumulates in poorly ventilated areas of the home such as basements and crawlspaces No level of radon is safe in your home. Upon receiving test results and learning of elevated radon levels, mitigation solutions are your next step. Suncourt Radon Fans (TF104-W) or kits (RDN04) are used as the front line of defense against elevated radon levels in the home. Suncourts radon
You may or may not have heard of Radon gas. Radon is a naturally occurring radioactive gas that is everywhere. Radon is odorless, colorless, and tasteless. The Radon levels in your neighbors house arent related to the Radon levels in your house. The only way to know how much Radon is in your house is to test for it. Soil type determines in part how much Radon gets into your house, with construction also playing a role.. Weve all heard of someone who has been diagnosed with lung cancer, and they have "never smoked a day in their life". Dont let that be anyone you know! Radon is documented to be the second leading cause of lung cancer behind smoking, causing approximately 21,000 deaths each year. Radon testing is easy and affordable, with accurate results usually produced within 48-72 hours of the start of a test. The piece of mind from knowing your Radon level is PRICELESS!. When having a Radon test performed, make certain that you use a testing or mitigation specialist who is certified ...
Radon is present in all dwellings, thus posing a major health problem. For rooms used more frequently than on a temporary basis, it is therefore required to keep radon concentrations as low as possible. The amount of radon entering a dwelling with the outdoor air during air exchange and being released from building materials can hardly be reduced. It is therefore not generally feasible to reach radon levels below 100 Bq/m³ indoors in Germany. Such a situation is to be found in areas with increased radon concentrations in outside air and in dwellings with an above-average release of radon from construction material. Measures to reduce radon concentrations should always be considered with levels exceeding 100 Bq/m³.. ...
Radon is a naturally-occurring radioactive gas found in air, soil, rocks, and water. The main source of indoor radon is from soil gas entering homes through foundation cracks. Approximately 6% of US homes have radon levels above the Environmental Protection Agency recommended levels. Radon decay products enter the human body mostly by inhalation and deliver radiation doses to various organs including the breast. This could cause DNA damage.Although this is a possible mechanism by which radon exposure could bring about cancerous changes in the breast, there have been very few studies looking at whether the two are linked. Researchers in the US have conducted a study to look at the association between environmental radon exposure and breast cancer incidence in US women. They recently published the results in the journal Environmental Health.. ...
OBJECTIVE: To determine the number of deaths from lung cancer related to radon in the home and to explore the cost effectiveness of alternative policies to control indoor radon and their potential to reduce lung cancer mortality. DESIGN: Cost effectiveness analysis. SETTING: United Kingdom. DATA SOURCES: Epidemiological data on risks from indoor radon and from smoking, vital statistics on deaths from lung cancer, survey information on effectiveness and costs of radon prevention and remediation. MAIN OUTCOME MEASURES: Estimated number of deaths from lung cancer related to indoor radon, lifetime risks of death from lung cancer before and after various potential interventions to control radon, the cost per quality adjusted life year (QALY) gained from different policies for control of radon, and the potential of those policies to reduce lung cancer mortality. RESULTS: The mean radon concentration in UK homes is 21 becquerels per cubic metre (Bq/m(3)). Each year around 1100 deaths from lung cancer (3.3% of
Editorial Note: The elevated radon levels near the eastern border of Pennsylvania are associated with natural uranium deposits that extend into northern New Jersey and southern New York. Since similar geologic deposits are found throughout the country, the elevated radon levels in Pennsylvania may indicate a much broader national problem. Radon enters a building through cracks, such as those in a basement floor, and through openings around pipes and wiring. Once inside, the radon builds up in the air, particularly in poorly ventilated houses. As radon daughters are formed, they attach to airborne particulates. When inhaled, these particulates can deliver a substantial dose of radiation to the bronchial epithelium. No exposure limit has been established for indoor levels of radon from natural sources; however, EPA is now developing guidelines that will define action levels concerning houses with high concentrations of radon and is developing and evaluating mitigation strategies. Exposure to radon ...
If the SWAT Environmental test determines that there is no danger of high radon levels in your house, you should continue to have it tested at regular intervals. Although a negative test result is certainly good news, it does not mean that radon could not become an issue in your house later on. If the test does determine that your house contains dangerous radon levels, you can have SWAT Environmentals experts install a mitigation system to correct the problem. This system will be completely customized to your houses specific requirements. Generally, it will employ a multi-front strategy designed to remove any radon gas currently in your home, replace it with fresh, clean air and prevent the gas from returning. With this type of system in place, you will no longer need to worry about the health impact of the air your family breathes.. ...
I was just wondering if anybody knew how long it shoud take to lower the radon level in my basement after installing mitigation system. First let me
The U.S. Environmental Protection Agency recommends a tested radon level of less than 4 picocuries per liter of volume in homes. Levels of 4 picocuries per liter or above should prompt the...
Radon is a colorless, odorless, naturally occurring radioactive gas found in our rocks and soils. "It enters homes through cracks and other openings in foundations," said Guy Delius, director of the Division of Public Health Protection and Safety. "Any home can have elevated levels of radon. The only way to know about your home is to test.". "Radon can certainly be a threat to public health and is a risk factor for lung cancer. It is extremely important to have radon levels tested in your homes," said DPH Commissioner William Hacker, M.D. "In some instances, radon exposure over an extended period of time can cause serious adverse health effects." According to the National Academy of Sciences, exposure to indoor radon gas is the second leading cause of lung cancer in the United States after smoking. The Surgeon General issued a health advisory in 1988 emphasizing the need to test for indoor radon and correct the problem when elevated levels are found. "Fortunately, most homes with elevated levels ...
Rutgers Radon Measurement Proficiency Course (9/24-25/12) by Rutgers Office of Continuing Professional Education (OCPE). Radon Measurement Proficiency ...
If your radon tests show that you have high levels of radon gas, you will need to contact a professional immediately. If your test shows low levels, then no further action is required. If your levels are high, be sure to call S.W.A.T. Environmental. We are local to the Charlotte, NC area, and will be glad to help you with your Charlotte radon mitigation needs. We have all of needed certifications and knowledge to reduce your radon levels by as much as 99%. When it comes to Charlotte radon mitigation, dont play around. This gas has killed more than 20,000 people every year. Radon gas is now the second leading cause of lung cancer, making it one of the most dangerous gases in America. Do not let your Charlotte home fall victim to this horrible gas. Call us today for a free quote on a new radon mitigation system.. S.W.A.T. Environmental is the nations most trusted radon mitigation company, and we are able to provide you with the much needed Charlotte radon mitigation. We always offer a free ...
There is misinformation about how radon gas travels. Too many people think that if their neighbor has a low radon level in their home it means they must too. It doesnt work that way. Radon concentrations are a combination of soil decay, construction methods and materials used in building each home, and the occupants use of the house. Together these factors contribute to elevated radon levels. For these reasons and more, MN now requires disclosure of any radon testing that has occurred in a home being offered for sale. Unfortunately, there are no rules regulating radon testers; that part is still buyer beware.. ...
Radon gas typically enters your home through the basement, from cracks in your homes foundation, dirt floors, floor drains, and pores in block walls. Other sources of radon in the home may include the radon gas in water supply and building materials.. Radon is estimated to cause many thousands of deaths each year- the 2nd leading cause of lung cancer in the United States. Radon is the leading cause of lung cancer among non-smokers. Thats because when you breathe air containing radon, you can get lung cancer. In fact, the Surgeon General has warned that radon is the second leading cause of lung cancer in the United States today. Only smoking causes more lung cancer deaths. If you smoke and your home has high radon levels, your risk of lung cancer is especially high.. ...
Until early 1980s we have lived without thinking that radon ruins our health. But, scientists knew truth that radon radioactive danger is bedeviling on indoor that we live for a long time. Specially, interest about effect that get in danger and injury for Radon and human body is inactive in our country. Recently, with awareness for Radon contamination, We inform about importance and danger of Radon in some station of the Seoul subway, indoor air of school facilities and We had interest with measure and manages. Usually, Radon gas emitted in base of building enters into indoor through building floor split windage back among radon or indoor air of radon daughter nucleus contamination is increased. Therefore, indoor radon concentration rises as there are a lot of windages between number pipe of top and bottom and base that enter crack from estrangement of the done building floor, underground to indoor. Thus, Radon enters into indoor through architecture resources water as well as, kitchen natural ...
Radon is a radioactive gas of natural origin that tends to accumulate in buildings. Although the levels recorded can be reduced, this requires the co-operation of residents, and the French population has a very poor understanding of radon-induced risk. The justification for keeping a close watch on indoor radon concentrations is the underlying risk of lung cancer as a consequence of exposure to high levels. Two official statements dealing with radon risk management were issued in 1999 in France to define the thresholds that should not be exceeded. The results of measurement campaigns, the number of buildings where concentrations above these thresholds are likely to occur, the identification of high radon potential areas and the actions taken locally together with the way that the risk from radon and remedial actions are perceived are reviewed herein ...
Posted By Joshua on Jul 6, 2017. Systemair HP 190 Radon Mitigation Fan 4/5″ ( Inch) Duct, 157 CFM Reviews Here we bring to you Systemair HP 190 Radon Mitigation Fan 4/5″ ( Inch) Duct, 157 CFM Reviews which is user-friendly and residential duct fan - HP 190 for better performance and increased usefulness. WHAT IS SYSTEMAIR HP190 RADON FAN? This is a Fantech HP 190 radon mitigation fan. The product is capable of effectively eliminating the radon levels from.... ...
Posted By Joshua on Apr 17, 2017. Are you aware of the term Radon? Maybe yes as in the past few years there were many talks on the radon issues. Many conversations, researchers and also media talks surround this sphere of the noble gas section. So, whether you are willing to sell your home or staying in a radon area, you need to go through a certified inspection. There may be some who are not aware of the term radon, so to help them out and thus to provide further.... ...
January is National Radon Month. The purpose of the month is to draw attention to radon as a serious public health issue and to motivate Americans to take action to protect themselves from radon health effects. In the state of Kentucky, Bullitt County is located in ZONE 1, which has the highest potential for exposure.
The Indoor Radon Abatement Act (IRAA), Section 306, and the Toxic Substances Control Act (TSCA), Section 10, authorizes EPA to assist States and Federally Recognized Indian Tribes in the development and implementation of programs and projects reducing radon risks. Funding Priority: Specifically, EPA will award funds to: 1) establish effective radon programs among States, Territories, and Federally Recognized Indian Tribes; 2) increase the number of homes, schools, and other buildings tested and mitigated for radon; 3) encourage radon testing and disclosure in connection with real estate transfers; 4) implement radon resistant construction standard in high risk areas; and 5) promote environmental justice through programs and outreach efforts directed at low-income and/or culturally-diverse populations.. ...
Patient Presentation A 2-year-old female came to clinic for her health supervision visit. The family had just moved into an old home. During the interview the mother noted that they had had the home checked for lead and for radon. The radon test said it was normal, she said. The pertinent physical exam was normal…
Radon levels in Bloomfield are known to be above the national average. Have your Michigan radon levels reduced by SWAT Environmental today!
Find Jewell, Iowa radon levels and get your home tested for radon by a licensed Jewell, Iowa radon mitigation contractor with our nationwide radon directory. Jewell radon testing and mitigation services provided by licensed radon contractors.
Find Van Wert, Iowa radon levels and get your home tested for radon by a licensed Van Wert, Iowa radon mitigation contractor with our nationwide radon directory. Van Wert radon testing and mitigation services provided by licensed radon contractors.
Almost every home in Canada has some level of radon. But the levels vary from one house to another, even if they are next door to each other. The only way to know if you have a radon problem in your home is to have it tested. The test is simple and inexpensive.. The best time of year to test for radon is during the winter months when the windows and doors are normally kept closed and radon levels are at their highest.. For residents of Windsor, Ontario, Seacliff Inspections makes it easy and convenient to have your home tested for radon. Simply call us for an appointment to perform a long term test over the next 3 to 6 months. We will review the best location in your home for testing, install and pick up the test canisters as required after the recommended exposure time, and send them to the lab for analysis. Seacliff Inspections will then review the lab results with you so you clearly understand whether a radon problem exists or does not exist in your home, and what steps should be taken if a ...
Radon testing is the only way to detect indoor radon levels in your Silver Springs, Maryland home or business, and ensure you are safe from radon gas.
Radon testing is the only way to detect indoor radon levels in your Atlanta, GA home or business, and ensure you are safe from radon gas.
See how you can test radon levels in your home and what you can do to reduce them. Radon is a naturally occurring, radioactive gas, however, if it exceeds a certain level, it can be dangerous.
Although elevated radon levels in the home are a known cause of lung cancer and public outreach efforts promote radon testing and mitigation when unsafe levels are found, radon data are not standardized among states. This presentation shares the results of a collaborative feasibility study for a publicly accessible database that would standardize state and local radon data sources into a nationally consistent radon information resource. Could a national tracking database drive targeted public health actions in your geographic area?
Radon is a naturally occurring, odorless, radioactive gas that can seep into a house through the foundation, causing cancer. Every region of Wisconsin has some homes with elevated radon levels. The only way to find out if you have elevated radon levels in your home is to measure it. Continue reading... ...
Principal Investigator:MATSUZAWA Takao, Project Period (FY):1998 - 1999, Research Category:Grant-in-Aid for Scientific Research (C), Section:一般, Research Field:地球化学
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Radon is an odorless, colorless radioactive gas found in our environment. Cortland County has the highest average indoor radon level in the New York State.
This publication summarizes the status of radon programmes at the start of 2014 in the Member States in Europe participating in the IAEA technical cooperation project on establishing enhanced approaches to the control of public exposure to radon. The current status was determined from responses to a questionnaire covering the following elements of a national radon action plan policies and strategies; radon measurement surveys; establishment of reference levels; managing radon in existing buildings and in future buildings; education and training of professionals; and public awareness initiatives.. ...
Radon is a colourless, odourless gas that is released from the degradation of uranium naturally present in rock and soil. Radon levels outdoors are generally low; however, radon can enter buildings and homes through cracks and openings in the foundation and levels can become much higher indoors, especially in basements and lower floors.. ...
Dear Dr. Gofman: Thank you for kindly sending me a copy of your recent book entitled `Radiation from Medical Procedures in the Pathogenesis of Cancer and Ischemic Heart Disease. "Your observations are impressive and are consistent with the linear-nonthreshold dose-response hypothesis for the genetic and carcinogenic effects of ionizing radiation, and they support the wisdom of the ALARA principle [As Low As Reasonably Achievable] in radiation protection. "At the same time, however, the associations you have so skillfully demonstrated cannot be taken as proof of causal relationships, owing to the possible influence of confounding variables. Just as the inverse relationship between lung cancer rates and county residential radon levels, as reported by Bernard Cohen, does not suffice to prove that low-level exposure to radon protects against lung cancer, neither do your observations suffice to establish medical radiation as a causal factor in the associations you have identified. "Nevertheless, I ...
Measuring radioactivity from radon is potentially very confusing for the lay person for several reasons. One of which is that there are several different units of measurement depending on the application, era of standards and preference based on world regionalisms. Applications include activity, (which radon measurement falls under) absorbed dose, which is the measure of radioactive energy absorbed by tissue per unit mass and dose equivalent which is the measure of absorbed doses from DIFFERENT types of radioactivity such as alpha, beta, and gamma radiation. Many scintillation meters still measure this in the older measurement unit rem (Roentgen Equivalent Man) or microrems for gamma radiation.. For instance, when measuring radon, North America prefers to use the picoCuries per liter (pCi/L) designation as opposed to Becquerels or Bq / meter^3 which is typically used in Europe and the UK. These both measure a specific number of atomic disintegrations per volume of space.. In the case of the ...
I use Radalink Telemonitors (continuous monitoring devices) for radon testing. These devices take radon concentration air sampling measurements once an hour for
Radon levels in the Southern Lehigh School District were lower during follow-up testing in the past three weeks, but two buildings still have concentrations of the gas above the states acceptable
Radon test kits are available free from the Grey Bruce Health Unit as part of November Radon Awareness Month. Radon exposure is the second leading cause of lung cancer behind smoking. An estimated 20%
Radon is tasteless, odorless and invisible, but the radioactive gas still kills more Americans every year than drunk driving-one reason why University of Georgia Cooperative Extension experts advise Georgians to test their homes. It is the most common cause of lung cancer among non-smokers and causes about 21,000 deaths a year.
Why dont more people understand the lung cancer risk from radon? Radon exposure is the leading cause of lung cancer in non-smokers.