An improved method for the rapid determination of 90 Sr in cow's milk
| Autor: | Sheila Kramer-Tremblay, Xiongxin Dai, Nicolas Guérin, Ray Rao, Remi Riopel |
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| Rok vydání: | 2017 |
| Předmět: |
inorganic chemicals
Strontium Chromatography Chemistry Elution Health Toxicology and Mutagenesis chemistry.chemical_element Hydrochloric acid General Medicine 010501 environmental sciences 010403 inorganic & nuclear chemistry Mass spectrometry 01 natural sciences Pollution 0104 chemical sciences chemistry.chemical_compound Ashing Nitric acid Environmental Chemistry Waste Management and Disposal Inductively coupled plasma mass spectrometry Strontium-90 0105 earth and related environmental sciences |
| Zdroj: | Journal of Environmental Radioactivity. :115-119 |
| ISSN: | 0265-931X |
| DOI: | 10.1016/j.jenvrad.2017.05.007 |
| Popis: | 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 40 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 8 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. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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