hrvatski

90Sr U POVRĆU U ZAGREBU I ZADRU

The Radiation Protection Unit of the Institute for Medical Research and Occupational Health in Zagreb monitors activity concentrations of radionuclides in environmental samples in the Republic of Croatia. This paper presents the results of monitoring 90Sr in samples of lettuce, chard and cabbage, obtained in the period from 2013 to 2017 at two locations, in Zagreb and Zadar. Results for the samples of lettuce, cabbage, and chard vary within two orders of magnitude, ranging from 18.2 mBq kg-1 for lettuce to 341 mBq kg-1 for chard, both samples being collected in Zagreb. These differences can be explained by various factors like pH, organic and chemical properties of soil, different climatic conditions, etc. We calculated the annual effective doses from 90Sr intake by ingestion. The highest value of 146.79 nSv was estimated for 2015 for Zagreb, and the lowest, 54.16 nSv, for Zadar for the same year. Since the upper limit of public exposure is 1 mSv per year, we can conclude that the estimated doses are low and do not present a health hazard for the population living at these locations and consuming these types of vegetables. Certainly, the radiological condition of the environment and the influence of all related factors should be monitored, in order to detect changes and potential radiological contamination that in the future possibly could have adverse effects on human health.

90Sr, povrće, Zagreb, Zadar

nije evidentirano