The use of radon (Rn-222) and volatile organic compounds in monitoring soil gas to localize NAPL contamination at a gas station in Rio Claro, Sao Paulo State, Brazil

dc.contributorUniversidade Estadual Paulista (UNESP)
dc.creatorBarbosa, E. Q.
dc.creatorGalhardi, J. A.
dc.creatorBonotto, D. M.
dc.date2014-12-03T13:11:27Z
dc.date2016-10-25T20:14:14Z
dc.date2014-12-03T13:11:27Z
dc.date2016-10-25T20:14:14Z
dc.date2014-07-01
dc.date.accessioned2017-04-06T06:30:24Z
dc.date.available2017-04-06T06:30:24Z
dc.identifierRadiation Measurements. Oxford: Pergamon-elsevier Science Ltd, v. 66, p. 1-4, 2014.
dc.identifier1350-4487
dc.identifierhttp://hdl.handle.net/11449/113150
dc.identifierhttp://acervodigital.unesp.br/handle/11449/113150
dc.identifier10.1016/j.radmeas.2014.04.024
dc.identifierWOS:000338409200001
dc.identifierhttp://dx.doi.org/10.1016/j.radmeas.2014.04.024
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/923901
dc.descriptionThis 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.
dc.languageeng
dc.publisherElsevier B.V.
dc.relationRadiation Measurements
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.subjectRadon
dc.subjectVolatile organic compounds
dc.subjectSubsurface contamination
dc.subjectNAPL
dc.titleThe use of radon (Rn-222) and volatile organic compounds in monitoring soil gas to localize NAPL contamination at a gas station in Rio Claro, Sao Paulo State, Brazil
dc.typeOtro


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