[Home ] [Archive]    
:: Main :: About :: Current Issue :: Archive :: Search :: Submit :: Contact ::
:: Volume 18, Issue 2 (4-2020) ::
Int J Radiat Res 2020, 18(2): 243-253 Back to browse issues page
Evaluation of health hazards from radionuclides in soil and rocks of North Waziristan, Pakistan
I.U. Khan, Z. Qin, T. Xie, Z. Bin, H. Li, W. Sun Ph.D., , E. Lewis
Key Lab of In-fiber Integrated Optics, Ministry Education of China, Harbin Engineering University, Harbin 150001 , sunweimin@hrbeu.edu.cn
Abstract:   (1349 Views)
Background: The aim & objective of this study is to evaluate the health hazards of the general public from the existence of the radioactive nuclides in soil of North Waziristan and to establish a reference line for future work on radioactivity concentration in this locality. Methods and Materials: A highly background radiation shielded HPGe system is used to measure radioactivity in the collected samples of the geographical study area. Results: The radioactivity concentration is found to be in the range 42.6–106.3 Bq/kg for Ra-226, 4.0–93.8 Bq/kg for Th-232, 49.9–645.5 Bq/kg for K-40, and 2.6–8.33 Bq/kg for Cs-137. The external and internal hazards indices (Hext & Hint), absorbed γ- dose rate (ADR) and average effective dose (AED) are estimated from the computed activities and determined the average Hext ~ 0.75 and Hint ~ 0.94. The mean absorbed dose rate was found to be 101 nGy/h. The Radium equivalent activity of Datta Khel (422.081 Bq/kg), Khaisur forest (407.938 Bq/kg), Jani Khel (379.213) specific regions and the corresponding outdoor annual effective dose rate was found to be 0.15 mSv/yr, which is higher than the world’s mean value of 0.07 mSv/yr. Conclusion: A strong possitive correlation amongst the radioactive nuclides and, corresponding radiological variables at P ≤ 0.01confirmed that Ra-226 and Th-232 were the significant contributors to γ-radiation emission. Radioactivity concentrations and corresponding radiometric parameters were found to be higher in the specific areas of North Waziristan compared to the world’s mean values poses possible radiological risks for the residents of those areas.
Keywords: HPGe detector, Background Radioactivity, radiological hazards, soil.
Full-Text [PDF 1941 kb]   (283 Downloads)    
Type of Study: Original Research | Subject: Medical Physics
Send email to the article author

Add your comments about this article
Your username or Email:


XML     Print

Download citation:
BibTeX | RIS | EndNote | Medlars | ProCite | Reference Manager | RefWorks
Send citation to:

Khan I, Qin Z, Xie T, Bin Z, Li H, Sun W et al . Evaluation of health hazards from radionuclides in soil and rocks of North Waziristan, Pakistan. Int J Radiat Res. 2020; 18 (2) :243-253
URL: http://ijrr.com/article-1-2876-en.html

Volume 18, Issue 2 (4-2020) Back to browse issues page
International Journal of Radiation Research
Persian site map - English site map - Created in 0.05 seconds with 32 queries by YEKTAWEB 4241