Natural radiological hazardous of rocks in Duhok governorate, Kurdistan region, Iraq
Other Title(s)
الخطورة الإشعاعية الطبيعية للصخور في محافظة دهوك، إقليم كردستان، العراق
Source
Issue
Vol. 17, Issue 1 العلوم الصرفة و الهندسية (31 Dec. 2014), pp.99-107, 9 p.
Publisher
Publication Date
2014-12-31
Country of Publication
Iraq
No. of Pages
9
Main Subjects
Natural & Life Sciences (Multidisciplinary)
Abstract EN
We performed a study over the radiological impact on nine samples of natural rocks collected from various areas in the Duhok governorate.
The governorate is located in the northwest Kurdistan region of Iraq.
NaI(TI) gamma ray spectrometer for 30000 sec per sample was utilized to detect the concentration of radionuclide in rocked samples.
The average activity concentration values of 226Ra, 232Th and 40K obtained are 13.10 Bqkg-1, 5.20 Bqkg-1 and 134.32 Bqkg-1 respectively.
Gray Clay stone, Limestone, Fine sand, Silty clay and Marley shows relative high activity concentration whereas Chalky Limestone show low activity concentration while other rock formations were moderate in radioactivity level.
By utilizing the standard analytical method the excess life time cancer risk and hazard indices were estimated.
The average values obtained for absorbed dose, annual effective dose equivalent (Indoor, Outdoor), hazard indices (external, internal), excess lifetime cancer risk, representative (alpha, gamma) indices and radium equivalent are respectively 14.88 nGyh-1, 73 μSvy-1, 18.26 μSvy-1, 0.084, 0.120, 0.064×10-3, 0.115, 0.07 and 31 Bqkg-1.
After the values which obtained in this work are compared with corresponding world permissible values, it found that the values located below the standard limits for such environments.
The rock from the study area provided no excessive exposure for the inhabitants and can be utilized as building material without posing any radiological threat or harm to the public users.
American Psychological Association (APA)
Ramadan, Revink Ali& Abd Allah, Khayri M-S.. 2014. Natural radiological hazardous of rocks in Duhok governorate, Kurdistan region, Iraq. Journal of Dohuk University،Vol. 17, no. 1 العلوم الصرفة و الهندسية, pp.99-107.
https://search.emarefa.net/detail/BIM-796712
Modern Language Association (MLA)
Ramadan, Revink Ali& Abd Allah, Khayri M-S.. Natural radiological hazardous of rocks in Duhok governorate, Kurdistan region, Iraq. Journal of Dohuk University Vol. 17, no. 1 Pure and Engineering Sciences (Dec. 2014), pp.99-107.
https://search.emarefa.net/detail/BIM-796712
American Medical Association (AMA)
Ramadan, Revink Ali& Abd Allah, Khayri M-S.. Natural radiological hazardous of rocks in Duhok governorate, Kurdistan region, Iraq. Journal of Dohuk University. 2014. Vol. 17, no. 1 العلوم الصرفة و الهندسية, pp.99-107.
https://search.emarefa.net/detail/BIM-796712
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references : p. 105-106
Record ID
BIM-796712