Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5477566 | Journal of Environmental Radioactivity | 2017 | 5 Pages |
Abstract
An improved method was developed to rapidly determine strontium-90 (90Sr) in cow's milk samples in the event of a nuclear emergency. To perform this method, no heating or ashing steps were needed and all of the material used was disposable. Stable Sr tracer was added to each 40Â mL milk sample. Hydrochloric acid (HCl) and trichloroacetic acid (TCA) were added to the sample to flocculate the suspended fat and proteins in the milk. The sample was centrifuged and the strontium in the supernatant was precipitated with carbonate. The resulting precipitate was dissolved in 8Â M HNO3 and the solution was passed through a Sr resin to remove potential interferents. Strontium was eluted from the resin using a small volume of water. Strontium-90 was measured by liquid-scintillation counting (LSC) and the tracer by inductively coupled plasma mass spectrometry (ICP-MS). The figures of merit of the method were determined and the method was validated using spiked samples.
Related Topics
Physical Sciences and Engineering
Energy
Nuclear Energy and Engineering
Authors
Nicolas Guérin, Remi Riopel, Ray Rao, Sheila Kramer-Tremblay, Xiongxin Dai,