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dc.contributor.authorLópez-Lora, Mercedeses_ES
dc.contributor.authorLevy, Isabellees_ES
dc.contributor.authorChamizo, Elenaes_ES
dc.date.accessioned2019-11-25T11:25:12Z-
dc.date.available2019-11-25T11:25:12Z-
dc.date.issued2019-08-01-
dc.identifier.citationTalanta - the International Journal of Pure and Applied Analyt Chemistry 200: 22-30 (2019)es_ES
dc.identifier.issn0039-9140-
dc.identifier.urihttp://hdl.handle.net/10261/195453-
dc.description.abstractA simple and fast radiochemical procedure for the sequential extraction of U, Np and Pu from small-volume seawater samples (<10 L) is presented. The method has been developed and optimized for the final determination of 236U, 237Np, 239Pu and 240Pu by Accelerator Mass Spectrometry (AMS). It is based on the use of 242Pu as tracer for both Np and Pu isotopes. Samples are pre-concentrated by Fe(OH)2 co-precipitation. TEVA® and UTEVA® resins are used in a very simplified way for the final purification of the Pu+Np and U fractions, respectively. The radiochemical yields of the three elements have been investigated in detail by alpha spectrometry (AS) and gamma spectrometry (GS). The obtained results indicate high and robust chemical yields for the three elements and similar ones for Pu and Np. Furthermore, the use of 242Pu as tracer for 237Np is validated by analyzing a reference seawater sample (IAEA-443) by radiometric techniques. We demonstrated that, if chemicals are properly chosen, processed blank levels can be kept at the same level of the extremely low detection limits that can be achieved by AMS (105–106 atoms/sample). The procedure is finally applied for the study by AMS of a reference seawater sample from the Mediterranean Sea (IAEA-418).es_ES
dc.description.sponsorshipThis work has been financed from the project FIS2015-69673-P, provided by the Spanish Ministry of Economy. This work was partially funded by Fundación Cámara Sevilla through a Grant for Graduate Studies. The IAEA is grateful to the Government of the Principality of Monaco for the support provided to its Environment Laboratories.es_ES
dc.language.isoenges_ES
dc.publisherElsevieres_ES
dc.relationMINECO/ICTI2013-2016/FIS2015-69673-Pes_ES
dc.rightsclosedAccesses_ES
dc.subjectAccelerator Mass Spectrometryes_ES
dc.subject236Ues_ES
dc.subject237Npes_ES
dc.subject239Pues_ES
dc.subject240Pues_ES
dc.subjectSeawateres_ES
dc.titleSimple and fast method for the analysis of 236U, 237Np, 239Pu and 240Pu from seawater samples by Accelerator Mass Spectrometryes_ES
dc.typeartículoes_ES
dc.identifier.doi10.1016/j.talanta.2019.03.036-
dc.description.peerreviewedPeer reviewedes_ES
dc.relation.publisherversionhttp://dx.doi.org/10.1016/j.talanta.2019.03.036es_ES
dc.contributor.funderMinisterio de Economía y Competitividad (España)es_ES
dc.contributor.funderFundación Cámara Sevillaes_ES
dc.relation.csices_ES
oprm.item.hasRevisionno ko 0 false*
dc.identifier.funderhttp://dx.doi.org/10.13039/501100003329es_ES
dc.contributor.orcidChamizo, Elena [0000-0001-8266-6129]es_ES
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