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A COMPARISON OF WINTER SHORT-TERM AND ANNUAL AVERAGE RADON MEASUREMENTS IN BASEMENTS OF A RADON-PRONE REGION AND EVALUATION OF FURTHER RADON TESTING INDICATORS
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Details:
  • Pubmed ID:
    24670901
  • Pubmed Central ID:
    PMC4006371
  • Description:
    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.

  • Document Type:
  • Collection(s):
  • Funding:
    P30 ES005605/ES/NIEHS NIH HHS/United States
    P30 ES05605/ES/NIEHS NIH HHS/United States
    R01 CA085942/CA/NCI NIH HHS/United States
    R01 CA85942/CA/NCI NIH HHS/United States
    R01 ES05653/ES/NIEHS NIH HHS/United States
    T42OH008491/OH/NIOSH CDC HHS/United States
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