Determination of Natural Radioactivity in the North East Beach Sands of Madagascar
American Journal of Physics and Applications
Volume 5, Issue 1, January 2017, Pages: 6-12
Received: Dec. 30, 2016; Accepted: Jan. 17, 2017; Published: Feb. 13, 2017
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Authors
Randriamora Tiana Harimalala, Department of Dosimetry and Radiation Protection, National Institute of Sciences and Nuclear Techniques (INSTN-Madagascar), Antananarivo, Madagascar
Razafindramiandra Hary Andrianarimanana, Department of Dosimetry and Radiation Protection, National Institute of Sciences and Nuclear Techniques (INSTN-Madagascar), Antananarivo, Madagascar
Raoelina Andriambololona, Department of Theoretical Physics, National Institute of Sciences and Nuclear Techniques (INSTN-Madagascar), Antananarivo, Madagascar
Ravelomanantsoa Solofonirina Dieudonné, Department of Physics, Faculty of Sciences, University of Antananarivo, Antananarivo, Madagascar
Ralaivelo Mbolatiana Anjarasoa Luc, Department of Dosimetry and Radiation Protection, National Institute of Sciences and Nuclear Techniques (INSTN-Madagascar), Antananarivo, Madagascar
Rasolonirina Martin, Department of Nuclear Techniques and Analysis, National Institute of Sciences and Nuclear Techniques (INSTN-Madagascar), Antananarivo, Madagascar
Zafimanjato Joseph Lucien Radaorolala, Department of Dosimetry and Radiation Protection, National Institute of Sciences and Nuclear Techniques (INSTN-Madagascar), Antananarivo, Madagascar
Randriantseheno Hery Fanja, Department of Dosimetry and Radiation Protection, National Institute of Sciences and Nuclear Techniques (INSTN-Madagascar), Antananarivo, Madagascar
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Abstract
Exploration and exploitation of radioactive ores (ilmenite, zircon and monazite) are considered as the main source of exposure to ionizing radiation of the population living in the coast of Analanjorofo Region (Fénérive-Est Districts, Rural municipality Ampasimbe Manantsatrana). Radioactivity measurements have been performed in this region. The distribution of natural radionuclide gamma-emitters (238U, 232Th and 40K) and their respective annual effective dose rates have been determined for sand(s), water and air. The samples have been collected along and around the coast of the region. The radiation emitted from the natural radionuclide containing in the environmental samples has been determined by gamma spectrometry system and Radon meter (SARAD). Exposure dose rates at 1 m above the ground have been measured along the coast and in the villages around the exploitation sites. Dose rate measurements have been performed by Dosimeter Graetz X5 DE, equipped of Geiger Müller Counter. Results have been compared with the reference values provided by IAEA (BSS 115) and UNSCEAR 2000.
Keywords
Coastal Sands, 238U, 232Th and 40K Concentrations, Annual Effective Dose rate, Gamma Spectrometry, Geiger Müller Counter
To cite this article
Randriamora Tiana Harimalala, Razafindramiandra Hary Andrianarimanana, Raoelina Andriambololona, Ravelomanantsoa Solofonirina Dieudonné, Ralaivelo Mbolatiana Anjarasoa Luc, Rasolonirina Martin, Zafimanjato Joseph Lucien Radaorolala, Randriantseheno Hery Fanja, Determination of Natural Radioactivity in the North East Beach Sands of Madagascar, American Journal of Physics and Applications. Vol. 5, No. 1, 2017, pp. 6-12. doi: 10.11648/j.ajpa.20170501.12
Copyright
Copyright © 2017 Authors retain the copyright of this article.
This article is an open access article distributed under the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/) which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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