Risk assessment resulting from radionuclides in soils of the Republic of Macedonia

Stojanovska, Zdenka and Boev, Blazo and Ristova, Mimoza and Boev, Ivan and Ajka, Sorsa and Zunic, Zora S. and Ivanova, Kremena (2019) Risk assessment resulting from radionuclides in soils of the Republic of Macedonia. Contributions, Section of Natural, Mathematical and Biotechnical Sciences, MASA, 40 (2). pp. 161-168. ISSN 1857–9027

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Abstract

In the last decade, many studies have been made for measuring natural radioactivity in regions of the Republic of Macedonia. However, the information on terrestrial radiation exposure, and, consequently, risk assessment were not available. In this study, a risk assessment was done considering a specific activity concentration of 137 Cs in the topsoil. The results indicate that the external gamma doses due to natural radionuclides in soils are higher than those of 137 Cs. The absorbed dose rate in air varies in intervals: from 4.3 to 57 nGy/h (due to Ra); from 3.9 to 88 nGy/h (due to 232 Th); from 3.3 to 58 nGy/h (due to 40 K); and from 0.01 to 5.3 nGy/h (due to Cs). In addition, the mean annual effective doses due to natural radionuclides and 137 Cs in the soils of the Republic of Macedonia are estimated to be 78 μSv and 1.01 μSv, respectively. As well as, the values of external hazard index H ex indicate in general low gamma radiation risk for populations living in the Republic of Macedonia. 226 226 137 Ra, 232 Th, 40 K and

Item Type: Article
Subjects: Natural sciences > Physical sciences
Divisions: Faculty of Medical Science
Depositing User: Zdenka Stojanovska
Date Deposited: 24 Jun 2019 10:06
Last Modified: 24 Jun 2019 10:06
URI: http://eprints.ugd.edu.mk/id/eprint/22169

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