| Autor: |
Barros NG; Department of Occupational and Environmental Health, College of Public Health, University of Iowa, Iowa City, IA 52242; †Department of Physics, St. John's University, Collegeville, MN 56321., Steck DJ, Field RW |
| Jazyk: |
angličtina |
| Zdroj: |
Health physics [Health Phys] 2014 May; Vol. 106 (5), pp. 535-44. |
| DOI: |
10.1097/HP.0000000000000004 |
| Abstrakt: |
The primary objective of this study was to investigate the temporal variability between basement winter short-term (7 to 10 d) and basement annual radon measurements. Other objectives were to test the short-term measurement's diagnostic performance at two reference levels and to evaluate its ability to predict annual average basement radon concentrations. Electret ion chamber (short-term) and alpha track (annual) radon measurements were obtained by trained personnel in Iowa residences. Overall, the geometric mean of the short-term radon concentrations (199 Bq m) was slightly greater than the geometric mean of the annual radon concentrations (181 Bq m). Short-term tests correctly predicted annual radon concentrations to be above the 148 Bq m action level 88% of the time and above a 74 Bq m level 98% of the time. The short-term and annual radon concentrations were strongly correlated (r = 0.87, p < 0.0001). The foundation wall material of the basement was the only significant factor to have an impact on the absolute difference between the short-term and annual measurements. The findings from this study provide evidence of a substantially lower likelihood of obtaining a false negative result from a single short-term test in a region with high indoor radon potential when the reference level is lowered to 74 Bq m. |
| Databáze: |
MEDLINE |
| Externí odkaz: |
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