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THE CHALLENGE IN USING THE RETROSPECTIVE ASSESSMENT OF RESIDENTIAL RADON CONCENTRATION
T Dicu1, B D Burghele1, D Lupulescu1
1'Constantin Cosma' Radon Testing Laboratory (LiRaCC), Faculty of Environmental Science and Engineering, Babes-Bolyai University, Cluj-Napoca, Romania.
Radiation Protection Dosimetry
|June 13, 2018
Summary
This study measured indoor radon and 210Po in Romanian homes. Retrospective radon estimates using 210Po were higher than contemporary measurements, indicating a poor agreement between methods.
Area of Science:
- Environmental Science
- Radiological Protection
- Nuclear Physics
Background:
- Indoor radon (Rn) exposure is a significant health concern.
- Polonium-210 (210Po) can serve as a retrospective dosimeter for radon.
- Accurate radon assessment is crucial for public health in residential environments.
Purpose of the Study:
- To measure contemporary indoor radon activity concentration.
- To measure surface-deposited 210Po activity in Romanian dwellings.
- To compare retrospective radon estimates with contemporary measurements.
Main Methods:
- Measurements conducted in 65 Romanian homes.
- Contemporary radon assessed using RSKS and Radtrak2® track detectors.
- Surface-deposited 210Po measured using the CR-LR difference technique.
- Retrospective radon estimated from age-adjusted 210Po activity.
Main Results:
- Retrospective radon geometric mean: 318 Bq m-3.
- Contemporary radon geometric mean: 250 Bq m-3.
- High agreement (rC = 0.94) between RSKS and Radtrak2® detectors.
- Poor agreement (rC = 0.71) between retrospective and contemporary radon methods.
- Ratio of contemporary to retrospective radon geometric mean: 0.8.
Conclusions:
- Retrospective radon estimation using 210Po shows poor agreement with contemporary measurements.
- Discrepancies highlight challenges in using 210Po for accurate historical radon assessment.
- Further research is needed to refine retrospective radon assessment techniques.
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