Applicability of surface area normalised distribution coefficients (Ka) for uranium sorption

Simple item page
dc.contributor.authorPayne, TEen_AU
dc.contributor.authorVinzenz, Ben_AU
dc.contributor.authorNebelung, Cen_AU
dc.contributor.authorComarmond, MJen_AU
dc.date.accessioned2012-04-23T03:38:09Zen_AU
dc.date.available2012-04-23T03:38:09Zen_AU
dc.date.issued2011-10-01en_AU
dc.date.statistics2012-04-23en_AU
dc.description.abstractAdsorption of radionuclides on soils and sediments is commonly quantified by distribution coefficients (Kd values). This paper examines the relationship between Kd values for uranium(VI) adsorption and the specific surface area (SSA) of geologic materials. We then investigate the potential applicability of normalising uranium (U) Kd measurements using the SSA, to produce ‘Ka values’ as a generic expression of the affinity of U for the surface. The data for U provide a reasonably coherent set of Ka values on various solid phases, both with and without ligands. The Ka representation provides a way of harmonising datasets obtained for materials having different specific surface areas, and accounting for the effects of ligands in different systems. In addition, this representation may assist in developing U sorption models for complex materials. However, a significant limitation of the Ka concept is that sorption of radionuclides at trace levels can be dominated by interactions with specific surface sites, whose abundances are not reflected by the SSA. Therefore, calculated Ka values should be interpreted cautiously. © 2011, Elsevieren_AU
dc.identifier.citationPayne, T. E., Vinzenz, B., Nebelung, C., Comarmond, M. J. (2011). Assessment of surface area normalisation for interpreting distribution coefficients (Kd) for uranium sorption. South Pacific Environmental Radioactivity Association: 2008 conference, 23th-27th November 2008, Christchurch, New Zealand. In Journal of Environmental Radioactivity, 102(10), 888-895.en_AU
dc.identifier.govdoc4075en_AU
dc.identifier.issn0265-931Xen_AU
dc.identifier.urihttp://dx.doi.org/10.1016/j.jenvrad.2010.04.005en_AU
dc.identifier.urihttp://apo.ansto.gov.au/dspace/handle/10238/4180en_AU
dc.language.isoenen_AU
dc.publisherElsevieren_AU
dc.subjectUraniumen_AU
dc.subjectSorptionen_AU
dc.subjectSurface areaen_AU
dc.subjectRadioisotopesen_AU
dc.subjectAdsorptionen_AU
dc.subjectLigandsen_AU
dc.titleApplicability of surface area normalised distribution coefficients (Ka) for uranium sorptionen_AU
dc.typeConference Paperen_AU
Files
License bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
license.txt
Size:
1.63 KB
Format:
Item-specific license agreed upon to submission
Description:
Download
Collections
Conference Publications