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  • Title: Retrospective estimation of the concentration of 241Pu in air sampled at a Belgrade site following the Chernobyl accident.
    Author: Vukanac I, Paligorić D, Novković D, Djurasević M, Obradović Z, Milosević Z, Manić S.
    Journal: Appl Radiat Isot; 2006 Jun; 64(6):689-92. PubMed ID: 16442294.
    Abstract:
    The surface air activity concentration of 241Pu for the period May 01-15, 1986, for a monitoring site in Vinca, Belgrade was retrospectively estimated. The results were obtained by re-measurement of plutonium fraction alpha-spectrometric sources, with 236Pu as a tracer, used almost 13 years earlier for the determination of (239,240)Pu concentration in surface air immediately after the Chernobyl accident. The estimated 241Pu concentration, based on the 241Am in-growth method for air samples, ranged from 240 to 7800 microBq/m3. The average activity ratio 241Pu/(239,240)Pu originating from the Chernobyl accident at Belgrade site was approximately 100 at the collection time.
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