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Title: Separation and measurement of thorium, plutonium, americium, uranium and strontium in environmental matrices
Authors: Harrison, JJ
Zawadzki, A
Chisari, R
Wong, HKY
Keywords: Thorium
Separation processes
Issue Date: 1-Oct-2011
Publisher: Elsevier
Citation: Harrison, J. J., Zawadzki, A., Chisari, R., Wong, H. K. Y. (2011). Separation and measurement of thorium, plutonium, americium, uranium and strontium in environmental matrices. 10th Biennial SPERA (South Pacific Environmental Radioactivity Association) Conference, 24/11/2008 to 27/11/2008, Christchurch, New Zealand. In Journal of Environmental Radioactivity, 102(10), 896-900. doi:10.1016/j.jenvrad.2010.05.010
Abstract: A technique for the isolation of thorium (Th), plutonium (Pu), americium (Am), uranium (U) and strontium (Sr) isotopes from various environmental matrices has been adapted from a previously published method specific to water samples (Maxwell, 2006). Separation and isolation of the various elemental fractions from a single sub-sample is possible, thereby eliminating the need for multiple analyses. The technique involves sample dissolution, concentration via calcium phosphate co-precipitation, rapid column extraction using TEVA™, TRU™ and Sr-Spec™ resin cartridges, alpha spectrometry for Th, Pu, U and Am and Cerenkov counting for Sr. Various standard reference materials were analysed and chemical yields are in the range of 70–80% for Th, Am, U and Sr and 50–60% for Pu. Sample sizes of up to 10 L for water, 5 g for dry soil and sediment and 10 g for dry vegetation and seaweed can be processed using this technique. Copyright © 2010 Elsevier Ltd.
Gov't Doc #: 4076
ISSN: 0265-931X
Appears in Collections:Conference Publications

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