Radiochim. Acta 2019; aop Abd-Elmoniem A. Elzain*, Hajo Idriss, Yousif Sh. Mohammed, Khidir Shaib Mohamed, Mohamed Abd Elwahab Mohamed Ali, Mohamed Musa Saad Hasb Elkhalig, Isam Salih, Adam Khatir Sam, Mohammed H. Eisa, Sumai S. Mahmoud, Makin K. Massoud, Osman Abdallah A. Os and Mohammed Nour A. Rabih Assessment of radioactivity from selected soil samples from Halfa Aljadida area, Sudan https://doi.org/10.1515/ract-2018-3067 Received October 5, 2018; accepted December 10, 2018 Abstract: In this research, the results of radon concen- tration, surface and mass exhalation rates, radium con- centration, effective dose rate and the alpha index have been investigated in a number of 198 soil samples that have been collected from various residential locations of Halfa Aljadida area, Sudan. The can technique, contain- ing CR-39 have been used. From our results, the average value of soil gas radon concentration was found to be 1.96 ± 0.22 kBq · m −3 . The average values of surface and mass exhalation rates were 1.73 ± 0.19 Bq · m −2 · h −1 and 34.79 ± 3.87 mBq · kg −1 · h −1 , respectively. The radium con- centration average value was 8.06 ± 0.90 Bq · kg −1 . While the average value of the effective dose rate was recorded to be 54.69 ± 6.11 mSv · y −1 . The average value of alpha index of studied samples was (4.03 ± 0.45) × 10 −2 . From the study, a good positive and linear correlation between radium concentration, surface and mass exhalation rates of soil samples were present. In addition to that, a positive and linear correlation between radium and radon concen- trations was found. Finally, a comparison between the results and other findings was conducted and the results imply the fact that the area under consideration is safe as if the health hazard are mentioned. Keywords: Radon concentration, radium concentration, radon exhalation rate, passive diffusion radon dosim- eters, annual effective dose, alpha index. 1 Introduction The natural radionuclides is attracting the attention of the scientists all over the world due to their risks to the life on the earth and they are usually found in soil, rocks, plants, water and air [1]. The radionuclides that are present in soils find their way to the human body via the food chain *Corresponding author: Abd-Elmoniem A. Elzain, Department of Physics, University of Kassala, P.O. Box: 266, Kassala, Sudan; and Department of Physics, College of Science and Art, Qassim University, P.O. Box: 111, Oklat Al-Skoor, Saudi Arabia, E-mail: Abdelmoniem1@yahoo.com Hajo Idriss: Sudan Atomic Energy Commission, Khartoum, Sudan; and Committee on Radiation and Environmental Pollution Protection, Physics Department, College of Science, Al Imam Mohammad Ibn Saud Islamic University, Riyadh 11642, Kingdom of Saudi Arabia Yousif Sh. Mohammed: Department of Physics, College of Science and Art, Qassim University, P.O. Box: 111, Oklat Al-Skoor, Saudi Arabia; and Department of Physics, College of Education, Dalanj University, Dalanj, Sudan Khidir Shaib Mohamed: Department of Mathematics, College of Science, Dalanj University, Dalanj, Sudan; and Department of Mathematics, School of Mathematical Sciences, Dalian University of Technology, Dalian 116024, P.R. China Mohamed Abd Elwahab Mohamed Ali: Department of Geophysics, College of Earth Sciences and Mining, Dongola University, Dongola, Sudan Mohamed Musa Saad Hasb Elkhalig: Department of Physics, College of Science, Qassim University, Buraydah, Saudi Arabia Isam Salih: Department of Physics, Taibah University, Al-Madinah Al-Munawarah, Kingdom of Saudi Arabia; and Sudan Academy of Sciences, Khartoum, Sudan Adam Khatir Sam: Radiation Safety Institute, Sudan Atomic Energy Commission, Khartoum, Sudan; and Radiometrics Section, International Atomic Energy Agency Environment Laboratories, 4, Quai Antoine 1er, 98000, Monaco, Monaco Mohammed H. Eisa: Physics Department, College of Science, Sudan University of Science and Technology, Khartoum, Sudan; and Physics Department, College of Science, Al Imam Mohammad Ibn Saud Islamic University, Riyadh, Kingdom of Saudi Arabia Sumai S. Mahmoud: Department of Physics, University of Kassala, P.O. Box: 266, Kassala, Sudan; and Department of Physics, College of Science and Art, Qassim University, P.O. Box: 111, Oklat Al-Skoor, Saudi Arabia Makin K. Massoud: Department of Physics, University of Kassala, P.O. Box: 266, Kassala, Sudan; and Department of Mathematics, College of Science and Art, Qassim University, P.O. Box: 111, Oklat Al- Skoor, Saudi Arabia Osman Abdallah A. Os and Mohammed Nour A. Rabih: Department of Mathematics, College of Science and Art, Qassim University, P.O. Box: 111, Oklat Al-Skoor, Saudi Arabia; and Department of Mathematics, College of Science, University of Bakht Er-ruda, Eddwaim, Sudan Brought to you by | Iowa State University Authenticated Download Date | 1/20/19 5:21 PM