Article

A geographic information systems (GIS) and spatial modeling approach to assessing indoor radon potential at local level

California Department of Health Services, Environmental Health Laboratory Branch, 850 Marina Bay Pkwy, Mailstop G365/EHLB, Richmond, CA 94804, USA.
Applied Radiation and Isotopes (Impact Factor: 1.23). 04/2006; 64(4):490-6. DOI: 10.1016/j.apradiso.2005.10.005
Source: PubMed

ABSTRACT

This study integrates residential radon data from previous studies in Southern California (USA), into a geographic information system (GIS) linked with statistical techniques. A difference (p<0.05) is found in the indoor radon in residences grouped by radon-potential zones. Using a novel Monte Carlo approach, we found that the mean distance from elevated-radon residences (concentration>74 Bq m(-3)) to epicenters of large (> 4 Richter) earthquakes was smaller (p<0.0001) than the average residence-to-epicenter distance, suggesting an association between the elevated indoor-radon and seismic activities.

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    • "Other recent studies have successfully quantified radon levels in dwellings (Ioannides et al., 2000). Others have focused on the spatial distribution of residential radon (Franco-Marina et al., 2003; Lacan et al., 2006), on the exhalation rates of radon levels in prevailing building materials (Jong et al., 2006), and on quantifying seasonal variations and depth dependence of soil radon concentration levels in different geological formations (Al-Shereideh et al., 2006; Lu and Zhang, 2006; Magalhaes et al., 2003). Some investigators have focused on quantifying the amount of natural radioactivity in building materials (Ahmad, 2007), on evaluating radon emanation from soil gas (Malczewski and Zaba, 2007; Zunic et al., 2006), and on assessing factors that underlie radon emission (Barros-Dios et al., 2002). "
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    ABSTRACT: It would be extremely useful to determine if, on a county-size scale, there might be some predictability to indoor radon. One approach is to make an application of GIS and D visualization to explore the radon problem in Fairfax County in northern Virginia, to evaluate correlations between indoor radon and geology, elevation, slope, and aeroradioactivity. It was found that there is a tendency for indoor radon to be greater in some parts of Fairfax County in homes on some geological units, in homes constructed on lower slopes, on sites at lower elevations, and in areas of higher aeroradioactivity. However, none of these physical variables exhibits a strong enough control on indoor radon to be used to construct radon potential maps that carry a high confidence of accuracy.
    Full-text · Article · Jan 2010
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    • "Other recent studies have successfully quantified radon levels in dwellings (Al-Jarallah and Mahur et al., 2006; Ioannides et al., 2000). Others have focused on the spatial distribution of residential radon (Franco-Marina et al., 2003; Lacan et al., 2006; Buttafuoco et al., 2007), on the exhalation rates of radon levels in prevailing building materials (de Jong and van der Graaf, 2006), and on quantifying seasonal variations and depth dependence of soil radon concentration levels in different geological formations (Al-Shereideh, 2006; Lu and Zhang, 2006; Brown et al., 2005; Magalhaes et al., 2003). Some investigators have focused on quantifying the amount of natural radioactivity in building materials (Ahmad, 2007), on evaluating radon emanation from soil gas (Malczewski and Zaba, 2007; Zunic et al., 2006), and on assessing factors that underlie radon emission (Barros-Dios et al., 2002). "
    [Show abstract] [Hide abstract]
    ABSTRACT: It would be extremely useful to determine if, on a county-size scale, there might be some predictability to indoor radon. One approach is to make an application of GIS and D visualization to explore the radon problem in Fairfax County in northern Virginia, to evaluate correlations between indoor radon and geology, elevation, slope, and aeroradioactivity. It was found that there is a tendency for indoor radon to be greater in some parts of Fairfax County in homes on some geological units, in homes constructed on lower slopes, on sites at lower elevations, and in areas of higher aeroradioactivity. However, none of these physical variables exhibits a strong enough control on indoor radon to be used to construct radon potential maps that carry a high confidence of accuracy.
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    Full-text · Article · Dec 2006 · Applied Radiation and Isotopes
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