Barbosa, E. Q. [UNESP]Galhardi, J. A. [UNESP]Bonotto, D. M. [UNESP]2014-12-032014-12-032014-07-01Radiation Measurements. Oxford: Pergamon-elsevier Science Ltd, v. 66, p. 1-4, 2014.1350-4487http://hdl.handle.net/11449/113150This study focuses on the presence of radon (Rn-222) and volatile organic compounds (VOCs) in soil gases at a gas station located in the city of Rio Claro, Sao Paulo, Brazil, where a fossil fuel leak occurred. The spatial distribution results show a correlation between Rn-222 and VOCs, consistent with the fact that radon gas has a greater chemical affinity with organic phases than with water. This finding demonstrates that the presence of a residual hydrocarbon phase in an aquifer can retain radon, leading to a reduced radon content in the soil gas. The data in this study confirm the results of previous investigations, in which the method used in this study provided a preliminary fingerprint of a contaminated area. Furthermore, the data analysis time is brief, and only simple equipment is required. (C) 2014 Published by Elsevier Ltd.1-4engRadonVolatile organic compoundsSubsurface contaminationNAPLArtigo10.1016/j.radmeas.2014.04.024WOS:000338409200001Acesso restrito7430102726026121