caa a22 4500 378930958 CHVBK 20180305123629.0 cr unu---uuuuu 161128e20040801xx s 000 0 eng 10.1524/ract.92.8.467.39273 doi (NATIONALLICENCE)gruyter-10.1524/ract.92.8.467.39273 Method for determining plutonium in air filters in detection of nuclear activities [Elektronische Daten] [Susanna Salminen, I. Outola, T. Jaakkola, Satu Pulli, R. Zilliacus, Jukka Lehto] A method was developed to determine activities and isotope ratios of plutonium and uranium. The method includes dry and wet ashing of air filters and separation of plutonium and uranium from each other and from other nuclides on Eichrom®´s extraction chromatography resins UTEVA and TRU. Interferences in plutonium separation caused by thorium and polonium were investigated and eliminated. A field trial was performed in Kurchatov, Kazakhstan, to test the aerosol sampling and radiochemical methods developed for plutonium and uranium. In the air samples collected, the activity of 239,240Pu varied between 0.67 and 228Bq/kg of dust, the activity of 238Pu from 0.20Bq/kg to 16.4Bq/kg of dust, and the isotopic ratio 238Pu/239,240Pu between 0.011 and 2.4. Concentrations of Pu isotopes in the air were 13.4-2490nBq/m3 for 239,240Pu and 7.2-960nBq/m3 for 238Pu. Radioactivity of 239,240Pu in air filters from Astana varied between 0.075 and 0.72Bq per kg of dust and that of 238Pu between 0.038 and 0.14Bq/kg of dust. Activity concentration of 239,240Pu in the air of Astana was 5.0-130nBq/m3. © 2004 Oldenbourg Wissenschaftsverlag GmbH Laboratory techniques, experiments nationallicence Analytical chemistry nationallicence Inorganic chemistry nationallicence Salminen Susanna aut Outola I. aut Jaakkola T. aut Pulli Satu aut Zilliacus R. aut Lehto Jukka aut Radiochimica Acta/International journal for chemical aspects of nuclear science and technology Oldenbourg Wissenschaftsverlag GmbH 92/8/2004(2004-08-01), 467-473 0033-8230 92:8/2004<467 2004 92 ract https://doi.org/10.1524/ract.92.8.467.39273 text/html Onlinezugriff via DOI 1 research article jats NATIONALLICENCE 856 40 https://doi.org/10.1524/ract.92.8.467.39273 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Salminen Susanna aut NATIONALLICENCE 700 1- Outola I. aut NATIONALLICENCE 700 1- Jaakkola T. aut NATIONALLICENCE 700 1- Pulli Satu aut NATIONALLICENCE 700 1- Zilliacus R. aut NATIONALLICENCE 700 1- Lehto Jukka aut NATIONALLICENCE 773 0- Radiochimica Acta/International journal for chemical aspects of nuclear science and technology Oldenbourg Wissenschaftsverlag GmbH 92/8/2004(2004-08-01), 467-473 0033-8230 92:8/2004<467 2004 92 ract CC0 http://creativecommons.org/publicdomain/zero/1.0 nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-gruyter