Show simple item record

dc.contributor.authorDulaiova, Henrieta  Concept link
dc.contributor.authorSims, Kenneth W. W.  Concept link
dc.contributor.authorCharette, Matthew A.  Concept link
dc.contributor.authorPrytulak, Julie  Concept link
dc.contributor.authorBlusztajn, Jerzy S.  Concept link
dc.date.accessioned2013-05-13T20:12:59Z
dc.date.available2013-05-13T20:12:59Z
dc.date.issued2012-07-31
dc.identifier.urihttps://hdl.handle.net/1912/5880
dc.descriptionAuthor Posting. © The Author(s), 2012. This is the author's version of the work. It is posted here by permission of Springer for personal use, not for redistribution. The definitive version was published in Journal of Radioanalytical and Nuclear Chemistry 296 (2013): 279-283, doi:10.1007/s10967-012-2140-0.en_US
dc.description.abstractWe developed a new method for the determination of 227Ac in geological samples. The method uses extraction chromatographic techniques and alpha-spectrometry and is applicable for a range of natural matrices. Here we report on the procedure and results of the analysis of water (fresh and seawater) and rock samples. Water samples were acidified and rock samples underwent total dissolution via acid leaching. A DGA (N,N,N’,N’-tetra-n-octyldiglycolamide) extraction chromatographic column was used for the separation of actinium. The actinium fraction was prepared for alpha spectrometric measurement via cerium fluoride micro-precipitation. Recoveries of actinium in water samples were 80±8 % (number of analyses n=14) and in rock samples 70±12 % (n=30). The minimum detectable activities (MDA) were 0.017-0.5 Bq kg-1 for both matrices. Rock sample 227Ac activities ranged from 0.17 to 8.3 Bq kg-1 and water sample activities ranged from below MDA values to 14 Bq kg-1of 227Ac. From the analysis of several standard rock and water samples with the method we found very good agreement between our results and certified values.en_US
dc.format.mimetypeapplication/pdf
dc.language.isoen_USen_US
dc.relation.urihttps://doi.org/10.1007/s10967-012-2140-0
dc.subjectActinium-227en_US
dc.subjectExtraction chromatographyen_US
dc.subjectWateren_US
dc.subjectRocken_US
dc.subjectAlpha-spectrometryen_US
dc.titleA new method for the determination of low-level actinium-227 in geological samplesen_US
dc.typePreprinten_US


Files in this item

Thumbnail

This item appears in the following Collection(s)

Show simple item record