A methodology for assessing the maximum expected radon flux from soils in northern Latium (central Italy) |
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Authors: | Mario Voltaggio Umberto Masi Massimo Spadoni Giorgio Zampetti |
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Institution: | (1) Consiglio Nazionale delle Ricerche, Istituto di Geologia Ambientale e Geoingegneria, via Bolognola 7, 00138 Roma, Italy;(2) Dipartimento di Scienze della Terra, Università “La Sapienza”, P.le A.Moro 5, 00185 Roma, Italy |
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Abstract: | Northern Latium (Italy) is an area where the Rn risk rate is potentially high because of the extensive outcropping of Neogene
U-rich volcanics and the presence of major active tectonic lineaments. The lack of data on Rn risk rates in that area, which
is undergoing major urban and industrial development, has prompted this study. It proposes a methodology to evaluate the maximum
potential diffusive Rn flux from soils based on the measurement of 226Ra, 232Th and 40K activities by γ-ray spectrometry, and the measurement of main soil parameters influencing the Rn emanation. This methodology
provides a simple, reliable and low-cost tool for drawing up radon flux maps useful to both public planners and private individuals,
who want to operate safely in the study area. The proposed methodology may also be applied to other geographic areas outside
the prescribed study area. |
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Keywords: | Radon Diffusive flux Risk assessment γ -Ray spectrometry Geochemical mapping |
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