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Journal of Chemistry
Volume 2017 (2017), Article ID 9182768, 8 pages
https://doi.org/10.1155/2017/9182768
Research Article

Comparison of Natural Radioactivity of Commonly Used Fertilizer Materials in Egypt and Japan

1Department of Natural Radiation Safety, Korea Institute of Nuclear Safety, 62 Gwahak-ro, Yuseong-gu, Daejeon 34142, Republic of Korea
2Department of Physics, Faculty of Science, Zagazig University, Zagazig 44519, Egypt
3Hirosaki University, Institute of Radiation Emergency Medicine, 66-1 Hon-cho, Hirosaki, Aomori, Japan

Correspondence should be addressed to Nabil M. Hassan

Received 6 March 2017; Revised 16 May 2017; Accepted 11 June 2017; Published 9 July 2017

Academic Editor: Rafael García-Tenorio

Copyright © 2017 Nabil M. Hassan et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Specific activities of 238U, 232Th, and 40K in the environment have been redistributed by the use of fertilizers in agriculture so their concentrations in fertilizer materials should be measured to identify the safe utilization of fertilizers. In the present work, the specific activities of these radionuclides in five commonly used fertilizers in Egypt and five fertilizers used in Japan were measured by HPGe and -ray spectrometry. The average values of 238U, 232Th, and 40K in Japanese fertilizers were less than their values in Egyptian fertilizers but both had some samples with specific activities greater than the recommended limiting values. The radiological hazards of radium equivalent activity (), external () and internal () indexes, alpha and gamma indexes, and annual effective dose, due to the presence of these radionuclides, were calculated and compared with each other.