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  • Title: 99Tc in surface air samples during the years 1965-1967.
    Author: García-León M, Piazza C, Madurga G.
    Journal: Int J Appl Radiat Isot; 1984 Oct; 35(10):961-3. PubMed ID: 6500724.
    Abstract:
    In this work, 99Tc activities in atmospheric filters taken during the years 1965, 1966 and 1967 are measured on a monthly or bimonthly basis. The results show a clear yearly pattern of the activities with a maximum below 3 mBq/1000 m3 at the end of each summer, probably related, in a non trivial way, to meteorological factors. Our atmospheric 99Tc data add a more detailed structure to previously published fallout curves.
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