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Radiation Protection Dosimetry 2004 111(1):3-7; doi:10.1093/rpd/nch350
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Radiation Protection Dosimetry Vol. 111, No. 1 © Oxford University Press 2004; all rights reserved

Estimates of the dose due to 222Rn concentrations in water

M. Galán López1, A. Martín Sánchez1,* and V. Gómez Escobar2

1 Departamento de Física, Universidad de Extremadura, E-06071 Badajoz, Spain
2 Departamento de Física, Escuela Politécnica, Universidad de Extremadura, E-10071 Cáceres, Spain

* Corresponding author: ams{at}unex.es

About 300 samples of groundwater were collected in the region of Extremadura (Spain) in order to analyse their radon activity concentrations. Correlations with the geological characteristics of the aquifer soil were studied. Internal doses by inhalation due to radon exhalation from the water sample and doses by ingestion were estimated. A model was used to calculate the lung dose due to inhalation of radon exhaled from the water. The estimated lung dose range found for the samples was from 2.1 x 10–3 to 13 mSv a–1 (the average contribution to the dose due to radon inhalation in Spain being ~1.2 mSv a–1). The estimated dose by ingestion ranged from 4.1 x 10–4 to 3.3 mSv a–1.


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