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  • Title: Radon mapping by retrospective measurements - an approach based on CDs/DVDs.
    Author: Pressyanov D, Mitev K, Georgiev S, Dimitrova I.
    Journal: J Environ Radioact; 2010 Oct; 101(10):821-5. PubMed ID: 20303628.
    Abstract:
    This article points out the ability to map retrospective (222)Rn concentrations by home stored CDs/DVDs. The method employs the high radon absorption ability of the polycarbonate material of CDs and DVDs and their track-etch properties. The principle steps for the application of the method are addressed. The possibility for individual a posteriori calibration is studied, demonstrating that better than 10% accuracy in retrospective measurements is potentially achievable. Results from retrospective measurements in three different regions are shown, demonstrating the potential of the method for large-scale radon mapping. Comparison with independently evaluated retrospective (222)Rn concentrations in places with known radon history was made and very good correspondence was observed. The experience indicates that the method can be used for large scale retrospective radon mapping and its applications can be expanded towards mapping of radon concentrations in water and soil gas.
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