Radiological Effects of Soil and Rock Samples of Different Libyan Regions

Autor:	Abdu Assalam A. Algattawi, Mohammed Fayez-Hassan, Hilmy Abo Elez, Emad Ibrahim Khalil
Rok vydání:	2019
Předmět:	Radium Soil test chemistry Radiological weapon Absorbed dose Activity concentration Radiochemistry Environmental science chemistry.chemical_element Nuclide Effective dose (radiation) World wide
Zdroj:	Engineering. 11:247-259
ISSN:	1947-394X 1947-3931
Popis:	The activity concentration of natural radioactivity for soil samples collected from western and mid Libyan regions were measured using HPGe detector. The average activity concentration of 226Ra, 232Th and 40K for ten regions was found to be 51.86 ± 7.14, 75.56 ± 10.95 and 128.98 ± 6.88 Bq/kg respectively. The results obtained for the corresponding nuclides 226Ra and 232Th are above the worldwide average values (35 and 30 Bq/kg) while 40K was smaller than worldwide average (400 Bq/kg). The average outdoor absorbed dose and the annual effective dose rates due to 226Ra, 232Th and 40K were observed to be 21.51 ± 2.93 nGy/h and 0.297 ±.03 mSv/y respectively, which are lower than world average values (60 nGy/h and 0.8 mSv/y). The radium equivalent activity and external hazard indices were found less than the world wide average values.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::07d5ddf3d476fa88d36ecad26bf68c0f https://doi.org/10.4236/eng.2019.115018 Zobrazit plný text záznamu