Naslov
137cs u tlu i oborini zagrebačke regije
(137cs in soil and fallout of the Zagreb region)

Autori
Šoštarić, Marko ; Petrinec, Branko ; Babić, Dinko

Vrsta, podvrsta i kategorija rada
Radovi u zbornicima skupova, cjeloviti rad (in extenso), znanstveni

Izvornik
Zbornik radova IX. simpozija Hrvatskog društva za zaštitu od zračenja / Knežević, Željka ; Majer, Marija ; Krajcar Bronić, Ines - Zagreb : Hrvatsko društvo za zaštitu od zračenja, 2013, 395-400

ISBN
978-953-96133-8-7

Skup
IX. simpozij Hrvatskog društva za zaštitu od zračenja s međunarodnim sudjelovanjem

Mjesto i datum
Krk, Hrvatska, 10.04.2013. - 12.04.2013

Vrsta sudjelovanja
Poster

Vrsta recenzije
Domaća recenzija

Ključne riječi
radioaktivnost; 137Cs; tlo; oborina; zagrebačka regija
(radioactivity; 137Cs; soil; fallout; region of Zagreb)

Sažetak
The Radiation Protection Unit of the Institute for Medical Research and Occupational Health in Zagreb monitors the activity concentrations of natural and fission-produced radionuclides in environmental samples from Croatia. In this article, we present results of the monitoring of 137Cs in soil and fallout in the period 2007-2010. We focus on differences in the activity concentrations before and after the nuclear accident in Fukushima. Activity concentrations of 137Cs were measured in samples of soil and fallout (wet and dry precipitation) from the region of Zagreb. Measurements were performed on soil samples from three different depths (0-5 cm, 5-10 cm, and 10-15 cm). Samples of fallout were collected during several periods before and after the Fukushima accident. Activity concentration in fallout is presented in two different ways, by expressing results in Bq/m3 and in Bq/m2. Results expressed in Bq/m2 indicate how much activity was transferred from fallout to soil, thus relating the activity concentrations in the two media. Measurement results show that in both media, i.e., soil and fallout, the activity concentration of 137Cs increased after the Fukushima accident. In soil samples, the activity concentration increased by 9-35 percent, depending on the depth. The increase was larger for the first two sampling depths than for the third one. For fallout, we compare the mean value of activity concentrations of all the samples before the Fukushima accident with the highest activity concentration after the accident. We found an increase in the activity concentration by approximately 1600 percent in units of Bq/m3, and by approximately 200 percent in units of Bq/m2.

Izvorni jezik
Hrvatski

Znanstvena područja
Fizika, Javno zdravstvo i zdravstvena zaštita

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