Distribution of natural and anthropogenic radionuclides and associated radiation indices in the Southwestern coastline of Caspian Sea

被引：49
作者：
Abbasi, Akbar [1 ]
Algethami, Merfat [2 ]
Bawazeer, Omemh [3 ]
Zakaly, Hesham M. H. [4 ,5 ]
机构：
[1] Univ Kyrenia, Fac Engn, Via Mersin 10, Kyrenia, Trnc, Turkey
[2] Taif Univ, Fac Sci, Phys Dept, POB 11099, Taif 21944, Saudi Arabia
[3] Umm Al Qura Univ, Fac Appl Sci, Med Phys Dept, Mecca, Saudi Arabia
[4] Ural Fed Univ, Inst Phys & Technol, Ekaterinburg 620002, Russia
[5] Al Azhar Univ, Fac Sci, Phys Dept, Assiut 71524, Egypt
来源：
MARINE POLLUTION BULLETIN | 2022年 / 178卷
关键词：
Activity concentrations; Caspian Sea; Radiation hazard; Sediment; Gamma-ray; HUMAN EXPOSURE; DOSE-RATE; SEDIMENTS; REGION;
D O I：
10.1016/j.marpolbul.2022.113593
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
The distribution pattern of natural radionuclides (Ra-226,Th- 232, and K-40) and anthropogenic radionuclide (Cs-137) in surface sediment samples from the southwestern coastline of the Caspian Sea were determined to estimate the radiation hazard indices using a high-purity germanium HPGe gamma-ray detector. The activity concentrations of the sediment samples ranged from 22.5 +/- 1.0 to 47.4 +/- 2.2 Bq kg(-1) dry weight (dw) for Ra-226, 6.5 +/- 0.1 to 18.7 +/- 0.7 Bq kg(-1) dw for Th-232, 559.9 +/- 30.9 to 233.2 +/- 19.4 Bq kg(-1) dw for K-40, and 0.9 MDL (minimum detection limit) to 2.7 +/- 0.1 Bq kg(-1) dw for Cs-137. Based on the measured values, radiological risk indices were estimated. The mean values for absorbed dose rate, ambient dose equivalent rate, and excess lifetime cancer risk, were calculated as 35.7 nGy h(-1), 47.9 nSv h(-1), and 0.2, respectively.
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页数：7
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