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dc.contributor.authorGordo, Elisa
dc.contributor.authorCañete -Hidalgo, Sergio
dc.contributor.authorDueñas-Buey, Mª Concepción 
dc.contributor.authorLópez-Gordillo, Francisco Javier 
dc.contributor.authorCarmona-Fernandez, Raquel 
dc.contributor.authorLiger-Pérez, Esperanza 
dc.contributor.authorPastor-Vega, Jose Manuel 
dc.contributor.authorPerez, Manuel
dc.contributor.authorRuiz-Cruces, Rafael 
dc.date.accessioned2018-05-11T10:32:26Z
dc.date.available2018-05-11T10:32:26Z
dc.date.created2018
dc.date.issued2018-05-11
dc.identifier.urihttps://hdl.handle.net/10630/15694
dc.description.abstractSeaweeds are known to be useful environmental bioindicators since they bioaccumulate radioisotopes at very low environmental concentrations. Levels of natural radionuclides in six ecologically relevant brown and red seaweed species from Arctic coasts (Kongsfjorden, Spitsbergen, Svalbard Islands) were analysed in the present study, in order to characterise the levels of natural radioactivity in this ecosystem and to compare this with previously published data in coastal areas from other latitudes. Thalli were collected by SCUBA divers at different depths in Hansneset in September 2014 and transported immediately to the laboratory. Young thalli, free from macroscopic epibiota, were dried, powdered and confined in a standard geometry before gamma spectrometry measurements. Then, the radioactivity of 7Be, 40K, 208Tl, 210Pb, 212Pb, 226Ra and 228Ra was measured by high-resolution gamma spectrometry using high-purity germanium detectors for 172800 s. Detectors were calibrated using a traceable multi gamma standard source and results are on a dry weight and fresh weight basis and are decay corrected to the date of sampling. Our results revealed the influence of cosmogenic radionuclides in the intertidal zone, as shown by the unique presence of 7Be in the brown macroalga Fucus distichus, the only analysed species inhabiting the intertidal. High concentrations of 40K were observed in all species, as this is one of the essential elements in biota. Remarkably is the high content of 210Pb in the red seaweeds Phycodrys rubens and Ptilota gunneri, suggesting that these species might possess a higher capacity for heavy metals bioaccumulation than the analysed brown seaweeds.en_US
dc.language.isoengen_US
dc.rightsinfo:eu-repo/semantics/openAccessen_US
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/*
dc.subjectAlgas - Regiones árticas
dc.subjectIsótopos radioactivos
dc.subject.otherArcticen_US
dc.subject.otherGamma-radionuclides
dc.subject.otherSeaweed
dc.titleRadionuclides in arctic marine macroalgae from Kongsfjorden (Svalbard)en_US
dc.typeinfo:eu-repo/semantics/conferenceObjecten_US
dc.centroFacultad de Medicinaen_US
dc.relation.eventtitleXI Congreso Regional de Seguridad Radiológica y Nuclear, Congreso Regional IRPAen_US
dc.relation.eventplaceLa Habana, Cubaen_US
dc.relation.eventdate16 al 20 de abril 2018en_US
dc.rights.ccAttribution-NonCommercial-NoDerivatives 4.0 Internacional*


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Attribution-NonCommercial-NoDerivatives 4.0 Internacional
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