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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
Journal article   Open access   Peer reviewed

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

Nirmalla G. Barros, Daniel J. Steck and R. William Field
Health physics (1958), Vol.106(5), pp.535-544
05/01/2014
DOI: 10.1097/HP.0000000000000004
PMCID: PMC4006371
PMID: 24670901
url
https://www.ncbi.nlm.nih.gov/pmc/articles/4006371View
Open Access

Abstract

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(-3)) was slightly greater than the geometric mean of the annual radon concentrations (181 Bq m(-3)). Short-term tests correctly predicted annual radon concentrations to be above the 148 Bq m(-3) action level 88% of the time and above a 74 Bq m(-3) 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(-3).
Environmental Sciences Environmental Sciences & Ecology Life Sciences & Biomedicine Nuclear Science & Technology Public, Environmental & Occupational Health Radiology, Nuclear Medicine & Medical Imaging Science & Technology Technology

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