Naslov
40K, 134Cs and 137Cs in pollen, honey and soil surface layer in the Croatia

Autori
Barišić, Delko ; Lazarić, K ; Lulić, Stipe ; vertačnik, Astrea ; Dražić, Maja ; Kezić, Nikola

Izvornik
Apidologie (0044-8435) 25 (1994), 6; 585-595

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
pottasium; caesium; honey; pollen; soil; transfer factor; radioactive contamination

Sažetak
Specific activites of 40K, 134Cs and 137Cs in pollen, honey and in the first 25 cm of the surface soil layer were measured by gamma-spectrometry. Specific activity of 40K in pollen is about 1 order of magnitude higher then in honey. A 40K soil-to-pollen transfer coefficient (TC(40K))of 0.436+-0.054 and a soil-to-honey transfer coefficient TC(40K) of 00.052+-0.008 were calculated as the mean of their respective values in 26 different segments of vertical soil profile. 134Cs and 137Cs specific activities in pollen and honey decrease with time, resulting in a decrease of 137Cs soil-to-honey transfer factors (TF(137Cs)) over time. The increase of the soil-to-honey TF(137Cs) with increasing soil depth is a consequence of vertical distribution of 137Cs in soil. TF(137Cs) values are highest in meadow and mixed honey types and lowest in bush tree honey. Similar trends are found for both TF(134Cs) and TF(137Cs). the resultes presented here indicated the importance of the caesium inventory in soil segments where plant root systems are developed.

Izvorni jezik
Engleski

Znanstvena područja
Šumarstvo

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