کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1738436 | 1016792 | 2011 | 5 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Separation and measurement of thorium, plutonium, americium, uranium and strontium in environmental matrices Separation and measurement of thorium, plutonium, americium, uranium and strontium in environmental matrices](/preview/png/1738436.png)
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.
Journal: Journal of Environmental Radioactivity - Volume 102, Issue 10, October 2011, Pages 896–900