Radioactive contents and background doses from northern alluvial sediment plains between rivers Ravi and Chenab,Pakistan  

作　　者：Abdul Jabbar Khalid Khan Tania Jabbar Muhammad Rafique S.U.Rehman Waheed Arshed Muhammad Dilband 

机构地区：[1]Health Physics Division, Pakistan Institute of Nuclear Science and Technology (PINSTECH) [2]Department of Physics, University of Azad Jammu and Kashmir Muzaffarbad [3]Department of Medical Physics, Nuclear Medicine Oncology and Radiotherapy Institute (NORI)

出　　处：《Nuclear Science and Techniques》2016年第4期127-134,共8页核技术（英文）

摘　　要：Radiometric analysis of soil samples, collected from northern alluvial sediment plains between rivers Ravi and Chenab, has been carried out. Activity concentrations of^(226) Ra,^(232)Th,^(40) K and the artificial radionuclide^(137) Cs were estimated by using high-purity germanium detector. Subsequent values of activity concentrations were used to find terrestrial absorbed dose rate and annual effective doses received by resident of area. The mean radioactivity levels of^(226) Ra,^(232)Th,^(40) K and^(137)Cs were found to be 45.0 ± 1.3,59.6 ± 2.8, 613.8 ± 20.0 and 4.0 ± 0.2 Bq kg^(-1), respectively. Terrestrial absorbed dose rate and annual effective dose received by public were found to be 85.1 n Gy h^(-1)and0.5 m Sv, respectively. The activity concentrations of^(226) Ra,^(232)Th,^(40) K and^(137)Cs and resulting doses obtained for the current study were compared with data available in the literature and with international standards.Radiometric analysis of soil samples, collected from northern alluvial sediment plains between rivers Ravi and Chenab, has been carried out. Activity concentrations of 226Ra, 232Th, 40K and the artificial radionuclide 137Cs were estimated by using high-purity germanium detector. Subsequent values of activity concentrations were used to find terrestrial absorbed dose rate and annual effective doses received by resident of area. The mean radioactivity levels of 226Ra, 232Th, 40K and 137Cs were found to be 45.0 ± 1.3, 59.6 ± 2.8, 613.8 ± 20.0 and 4.0 ± 0.2 Bq kg-1, respectively. Terrestrial absorbed dose rate and annual effective dose received by public were found to be 85.1 nGy h-1 and 0.5 mSv, respectively. The activity concentrations of 226Ra, 232Th, 40K and 137Cs and resulting doses obtained for the current study were compared with data available in the literature and with international standards.

关 键 词：年有效剂量 冲积平原 平原河流 放射性含量 巴基斯坦 泥沙 137Cs 226RA 

分 类 号：S151.9[农业科学—土壤学] TL818[农业科学—农业基础科学]