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Sunday, August 2, 2020 | History

3 edition of Exposure to radon daughters in dwellings found in the catalog.

Exposure to radon daughters in dwellings

Exposure to radon daughters in dwellings

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Published by National Radiological Protection Board in Chilton, Oxfordshire .
Written in English

    Places:
  • Great Britain.
    • Subjects:
    • Radon -- Health aspects -- Great Britain.

    • Edition Notes

      StatementNational Radiological Protection Board.
      ContributionsGreat Britain. National Radiological Protection Board.
      Classifications
      LC ClassificationsRA1247.R33 E98 1987
      The Physical Object
      Pagination31 p. :
      Number of Pages31
      ID Numbers
      Open LibraryOL2461247M
      ISBN 100859512819
      LC Control Number87167237
      OCLC/WorldCa17396956

      Introduction. Rn is a naturally occurring radioactive noble gas produced by the decay of Ra and belonging to the decay series of U. Since uranium is present in the earth’s crust, radon is found everywhere in different amounts depending on geology, in rocks, soil and underground water (1,2).It is formed underground, and its fraction rapidly penetrates into the outdoor atmosphere Cited by: 6. Radon seeps out of these ores into the atmosphere or into ground water, and in these localities it can accumulate within dwellings and expose humans to high ion exposure from.

        The gamma exposure indoors was measured in about dwellings, and the radon concentrations in about dwellings in the housing stock. In all cases, the radon exposure was found to be higher than the gamma by: 7. The cause was traced to levels of excessive radon daughters in his home times the level at which the U.S. Environmental Protection Agency (EPA) recommends remediation (i.e., 4 picocuries per liter [pCi/L]). Radon daughters attach to dust particles in the air that are attracted to items such as clothing, especially when the air is cold and dry.

      Radon (Rn) is a radioactive, noble gas, occurring naturally as decay of uranium chain. Radon has a half life of day. The radioactive gas radon decays and produces new radioactive elements called radon daughters or decay products. Radon daughter’s prod-ucts stick to air dust and if .   Health risks of radon stem from its breakdown into “radon daughters,” which emit high-energy alpha particles. These progeny enter the lungs, attach themselves, and may eventually lead to lung cancer. This exposure to radon is believed to contribute to betw excess lung cancer deaths in the United States each year.


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Exposure to radon daughters in dwellings Download PDF EPUB FB2

Radon has no stable -nine radioactive isotopes have been characterized, with atomic masses ranging from to The most stable isotope is Rn, which is a decay product of Ra, a decay product of U.

A trace amount of the (highly unstable) isotope Rn is also among the daughters of Rn. Three other radon isotopes have a half-life of over an hour: Rn, Radon dosimetry: a review of radon and radon daughter exposure conditions in dwellings and other structures. Axelson O, Edling C, Kling H () Lung cancer and residency—a case referent study on the possible impact of exposure to radon and its daughters in dwellings.

Scand J Work Environ Health 5: 10–15 PubMed CrossRef Google ScholarCited by: 3. Hence, radon exposure depends strongly on regional variations.

Radon decays to radon daughters, some of which emit alpha radiation. Alpha-emitting radon daughters are adsorbed Exposure to radon daughters in dwellings book dust particles which, when inhaled, are trapped in the lungs and may cause gene damage, mutations, and finally cancer [89].

After smoking, radon is considered to be. Radon concentration is usually measured in the atmosphere in becquerels per cubic meter (Bq/m 3), which is an SI derived a frame of reference, typical domestic exposures are about Bq/m 3 indoors and Bq/m 3 outdoors. In the US, radon concentrations are often measured in picocuries per liter (pCi/l), with 1 pCi/l = 37 Bq/m The mining industry traditionally measures exposure.

@article{osti_, title = {Potential health effects of indoor radon exposure}, author = {Radford, E P}, abstractNote = {Radon is a ubiquitous noble gas arising from decay of radium normally present in the earth's crust.

Alpha radiation from inhaled short-lived daughters of radon readily irradiates human bronchial epithelium, and there is now good evidence of excess risk of lung. Axelson O. () On the Effects of Exposure to Radon Daughters in Metal Mines and in Homes.

In: Castellani A. (eds) Epidemiology and Quantitation of Environmental Risk Author: Olav Axelson. Radon may be second only to smoking as a cause of lung cancer. The combination of smoking and radon exposure results in an especially serious health risk.

The risk of lung cancer due to indoor radon exposure can be decreased with current technology. This monograph is one in a series of self. summary. Sources of indoor radon and determinants of air concentrations and exposure levels are given as well as the uncertainties that exist in their formulation.

Methods of assessing health effects from inhalation of radon and its progeny are discussed with emphasis on dosimetry of radon daughters and formulation of risk per dose Size: KB. Underground miners exposed to high levels of radon progeny (also known as radon daughters because they are decay products that follow radon in the uranium series that begins with uranium) 3 have an increased risk of lung cancer.

4 Studies in laboratory animals confirm that the inhalation of radon progeny can induce lung cancer. For many people, radon in dwellings is the largest contributor to their lifetime exposure to radiation. Requirement 50 of IAEA Safety Standards Series No. GSR Part 3, Radiation Protection and.

Radiation exposure to the public through living in dwellings. The mean effective dose equivalent in Germany caused by living in dwellings has been measured to be mSv y −1 [1].

This exposure level is a result of radon, thoron, their short-lived daughter nuclides and direct radiation from building materials.

Indoor radon concentrations were measured in dwellings of the Puglia region in Southern Italy using LR passive detectors.

The results show that the radon concentrations varied from 15 ± 2 to ± Bq/m3 with a geometric mean of Bq/m3 and a geometric standard deviation of An analysis on the factors affecting radon concentration such as age of the dwellings, floors, and Cited by: The measurements indicated increased radon daughter concentrations in ground level dwellings within radon risk areas where lung cancer cases had lived, suggesting that this exposure was of.

This can damage lung tissue and lead to lung cancer over the course of your lifetime. The primary cause of lung cancer among non-smokers is exposure to radon, and the particles from its decay.

Overall, radon is the second leading cause of lung cancer. Radon is responsible for. Radon is a natural radioactive gas used to estimate the radioactive hazard in the environment. Radon (Rn), which is one of the daughters of uranium (U), represents the most essential isotope, with a half-life of days.

The associated health risks due to inhalation and ingestion of radon and its progeny when present in enhanced levels in an indoor environment like a human dwelling Author: Abd Elmoniem Ahmed Elzain. mSv. Thus, health risks of exposure dose of indoor radon were evaluated by measuring cancer per million per person.

References [1] Badhan, K., Mehra, R. and Sonkawade, R.G. Studying the variation of indoor radon levels in different dwellings in Hoshiarpur District of Punjab, India. Indoor Built Environ,1–6. The problem is, when breathed in, it can decay to form other, longer-lasting, solid radioactive species, which can coat the lungs, leading to continual exposure.

These so-called 'radon daughters' include polonium, polonium and lead – not family members you'd wish to spend a lot of time with. Volcanic activity can cause hazardous effects to the environment and the health of the exposed persons such as an increased risk for the development of several cancers.

In geothermal areas, volcanic gases such as radon are continuously vented from the main crater, from fumarolic fields or diffused through soil. The continued long-term exposure to radon can enhance the risk of lung cancer being Cited by: 1.

Summary of dose conversion factors for radon and radon daughters Radon-daughter equilib 10, 10, 10 4Z free ,2 42 free ,4 Z free RaA Nonequilibriua, little free RaA Honequllibriun Honequilibriua, Z free RaA ii 10,10,6,4 10,10,10,10 25Z free 9, W> free RaA H 10,9, 10,4 Exposure conditions.

The problem of elevated radon levels and of in- creased gamma exposure levels in dwellings in which uranium tailings material has been used for construction. Jonassen, N. and E. I. Hayes. Measurement of low concentrations of the short-lived radon daughters in the air by alpha spectroscopy.

Health Phys. 26_(1), January Indoor radon concentrations were measured in dwellings of the Puglia region in Southern Italy using LR passive detectors. The results show that the radon concentrations varied from 15 ± 2 to ± Bq/m 3 with a geometric mean of Bq/m 3 and a geometric standard deviation of An analysis on the factors affecting radon concentration such as age of the dwellings, floors, and Cited by: A Determinant of the Dose from Radon Daughters Beverly S.

Cohen Chap DOI: /bkch Publication Date (Print): February 5,