Separation method for Pu, Am and Sr in large air filter sample sets

MethodsX
Susanna Salminen-Paatero, Jussi Paatero

Abstract

A sequential separation method for Pu, Am, and Sr was applied for unusually large sample sets of air filters. The sample sets were combined weekly air filters covering sampling time from three months to five years, while in original method, the analyzed air filters had sampling time of only 1-3 days, containing significantly less organic and inorganic matrix and natural radionuclides. The separation method is based on ashing and wet-ashing, followed by column separations with extraction chromatography and anion exchange. Reference materials IAEA-447, IAEA-384, and NIST-SRM-4353A were analyzed with the modified separation method. IAEA-384 was representing best the composition and radionuclide level in the air filter samples.•Compared to the original method, sample ashing took considerably longer time (one day vs. several days).•High concentration of natural radionuclides in the large air filter sample sets interfered first the determination of 241Am and 90Sr, until an anion exchange step was adopted for removal of 210Bi and 210Po from Am and Sr fractions.•After modification, the method is suitable for separating artificial radionuclides 238,239,240Pu, 241Am, and 90Sr from large sample sets of air filters.

References

Dec 1, 1991·Health Physics·M L DietzM Wahlgren
Feb 4, 2011·Applied Radiation and Isotopes : Including Data, Instrumentation and Methods for Use in Agriculture, Industry and Medicine·Arzu ArincAndy K Pearce
Jul 11, 2012·Journal of Environmental Radioactivity·S Salminen-PaateroJ Paatero
Sep 13, 2017·Scientific Reports·Alexander BolsunovskyBrit Salbu
May 28, 2019·Environmental Science and Pollution Research International·Susanna Salminen-PaateroJussi Paatero

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