The Concept of Equivalent Radon Concentration for Practical Consideration of Indoor Exposure to Thoron
| Autor: | Jing Chen, Deborah Moir |
|---|---|
| Rok vydání: | 2012 |
| Předmět: |
Canada
indoor exposure Heating season business.industry Health Toxicology and Mutagenesis lcsh:R Public Health Environmental and Occupational Health Annual average lcsh:Medicine thoron chemistry.chemical_element Radon radon-222 Atmospheric sciences radon-220 radon Article respiratory tract diseases chemistry Air Pollution Indoor Environmental science Nuclear medicine business |
| Zdroj: | International Journal of Environmental Research and Public Health; Volume 9; Issue 1; Pages: 286-293 International Journal of Environmental Research and Public Health International Journal of Environmental Research and Public Health, Vol 9, Iss 1, Pp 286-293 (2012) |
| ISSN: | 1660-4601 |
| DOI: | 10.3390/ijerph9010286 |
| Popis: | To consider the total exposure to indoor radon and thoron, a concept of equivalent radon concentration for thoron is introduced, defined as the radon concentration that delivers the same annual effective dose as that resulting from the thoron concentration. The total indoor exposure to radon and thoron is then the sum of the radon concentration and the equivalent radon concentration for thoron. The total exposure should be compared to the radon guideline value, and if it exceeds the guideline value, appropriate remedial action is required. With this concept, a separate guideline for indoor thoron exposure is not necessary. For homes already tested for radon with radon detectors, Health Canada’s recommendation of a 3-month radon test performed during the fall/winter heating season not only ensures a conservative estimate of the annual average radon concentration but also covers well any potentially missing contribution from thoron exposure. In addition, because the thoron concentration is much lower than the radon concentration in most homes in Canada, there is no real need to re-test homes for thoron. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|