Determination of U-236 in sediment samples by accelerator mass spectrometry
| العنوان: | Determination of U-236 in sediment samples by accelerator mass spectrometry |
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| المؤلفون: | Francis R. Livens, J. Philip Day, L. Keith Fifield, Olivia J. Marsden, Phillip S. Goodall |
| المصدر: | The Analyst. 126:633-636 |
| بيانات النشر: | Royal Society of Chemistry (RSC), 2001. |
| سنة النشر: | 2001 |
| مصطلحات موضوعية: | Geologic Sediments, Water Pollutants, Radioactive, Chemistry, Analytical chemistry, chemistry.chemical_element, Sediment, Actinide, Spectrometry, Mass, Fast Atom Bombardment, Uranium, Mass spectrometry, Biochemistry, Analytical Chemistry, Uranium-236, England, Electrochemistry, Environmental Chemistry, Seawater, Nuclide, Ireland, Spectroscopy, Isotope analysis, Accelerator mass spectrometry |
| الوصف: | 236U is produced only by neutron irradiation of uranium and therefore is potentially useful as a marker for anthropogenic uranium in the environment. Accelerator mass spectrometry (AMS) provides a technique for the determination of very low concentrations of actinide nuclides, and has now been applied to the determination of 236U:235U ratios in an intertidal sediment core collected from the North Irish Sea. Combining measurements of the 238U mass concentrations calculated from alpha spectrometry with 238U:235U ratios from ICP-MS and 236U:235U ratios from AMS has allowed the estimation of the mass concentrations of 236U in the sediments. 236U mass concentrations are in the range 10(-8) to 10(-9) g kg-1, and 236U:238U atom ratios in the range from 10(-5) to 10(-6), well above natural baseline levels. Uncertainties based on propagation of measurement errors were less than +/- 10% although +/- 15% is perhaps a more realistic estimate of overall uncertainty. |
| تدمد: | 1364-5528 0003-2654 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::fb6d353fd1b8e187d8f51f5dad8cea4e https://doi.org/10.1039/b009764k |
| رقم الأكسشن: | edsair.doi.dedup.....fb6d353fd1b8e187d8f51f5dad8cea4e |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 13645528 00032654 |
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