članak: 1 od 1  
Archives of Biological Sciences
2010, vol. 62, br. 2, str. 301-307
jezik rada: engleski
naučni članak
doi:10.2298/ABS1002301G

Prirodna i veštačka radioaktivnost stočne hrane, mahovina i zemljišta u okolini Beograda
aUniverzitet u Beogradu, Fakultet veterinarske medicine
bInstitut za nuklearne nauke Vinča


Projekat Ministarstva nauke Republike Srbije, br. 19022

Sažetak

Gamaspektrometrijskim merenjima izvršeno je određivanje sadržaja prirodnih radio-nuklida (40K, 238U, 226Ra, 232Th) i 137Cs u uzorcima zemljišta, lucerke, kukuruza i mahovina, na šest lokaliteta u okolini Beograda. Prirodni radionuklidi u zemljištu su bili na nivou granica specifičnim za Srbiju, dok je ustanovljen relativno visok nivo aktivnosti 137Cs (oko 30 Bq kg-1). Nasuprot tome, u uzorcima biljaka, koje se najčešće koriste kao stočna hrana (lucerka, kukuruz), koncentracija aktivnosti prirodnih radionuklida i 137Cs je bila niska odnosno ispod granice detekcije. Sadržaj prirodnih radionuklida u mahovinama bio je u standardnim granicama detekcije specifičnim za Srbiju. Međutim, nivo aktivnosti 137Cs u mahovinama sakupljenim sa širokog područja okoline Beograda, bio je visok, a najviši sa područja Avala-Zuce (158-221 Bq kg-1). Dobijeni rezultati ukazuju da je ovaj radionuklid i posle 20 godina od nesreće u Černobilu, prisutan u životnoj sredini Beograda i da su mahovine dobar indikator kontaminacije životne sredine sa 137Cs.

Ključne reči

Belgrade environment; feedstuffs; mosses; radio-nuclides; soil

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