Evaluation of population doses in statistical regions of Macedonia resulting from the natural radioactivity in the soil.

Stojanovska, Zdenka and Zunic, Zora S. and Ristova, Mimoza (2012) Evaluation of population doses in statistical regions of Macedonia resulting from the natural radioactivity in the soil. In: 9th Conference of the Society of Physicist of Macedonia, 20-23 September, Ohrid, Macedonia.

[img]
Preview
Text
trud22.pdf

Download (553Kb) | Preview
Official URL: http://www.dfrm.org/index.php?option=com_content&v...

Abstract

Terrestrial radiation from naturally occurring radionuclides, such as 40K, radionuclides from the 238U and 232Th series and their decay products is the main external source of public exposure. This research presents the results of assessment the population doses from natural radionuclides in soils at the eight statistical regions of the Republic of Macedonia. The surface soil samples (from 0 to 20 cm depth) were collected during the period 2007-2010 from 213 locations of the entire country territory. High-resolution gamma spectroscopy was employed the qualitative and quantitative analysis. The obtained specific activity of 40K, 226Ra, 232Th and associated external dose resulting from the gamma-radiation were different in the soil of each region depending of the geological and geographical conditions. The results showed that the obtained values for gamma absorbed dose rate in air varied from 50 nGy h-1 in Skopje to 86 nGy h-1 in Pelagonija. The arithmetic and geometric mean values of the annual effective dose equivalent for the Republic of Macedonia were found to be: 83 Sv y-1 (SD=29) and 79 Sv y-1 (GSD=1.4), respectively.

Item Type: Conference or Workshop Item (Poster)
Subjects: Natural sciences > Physical sciences
Divisions: Faculty of Medical Science
Depositing User: Zdenka Stojanovska
Date Deposited: 29 Jan 2013 15:02
Last Modified: 29 Jan 2013 15:02
URI: http://eprints.ugd.edu.mk/id/eprint/5185

Actions (login required)

View Item View Item