Natural Radioactivity and Dose Assessment for Brands of Chemical and Organic Fertilizers Used in Saudi Arabia
- 1 Physics Department, Faculty Science for Girls, king Abdulaziz University, Jeddah, Saudi Arabia
Abstract
The activity concentration of naturally occurring radionuclides 40 K, 226 Ra and 232 Th have been measured in different brands of fertilizer samples in Saudi Arabia using sodium iodide gamma spectrometry. The results of measurements showed that the mean (ranges) of specific activities for 226 Ra, 232 Th and 40 K activities in the nitrogen, phosphorus and potassium fertilizers are 64 (35.8 - 120.7), 17 (3.2 - 56.8) and 2453 (744.9 - 4227.1) Bq/kg, respectively. With respect to organic fertilizers under investigation, the average radioactivity of 226 Ra, 232 Th and 40 K are 42, 10 and 333 BqKg ?1 , respectively. Radium equivalent activity is not exceed 370 Bq/kg, the maximum permissible limit for radiation dose for all present samples. Average values of the three natural radionuclides measured in the brands of fertilizers used in Saudi Arabia are within the range of values reported in several other countries. This study could be useful as baseline data for radiation exposure to fertilizers and their impact on human health.
- E. M. K. Ashraf, R. H. Higgy and M. Pimpl, “Radiological Impacts of Natural Radioactivity in Abu-Taror Phosphate Deposits Egypt,” Journal of Environmental Radioactivity, Vol. 55, No. 3, 2001, pp. 255-267. doi:10.1016/S0265-931X(00)00193-4
- J. I. Skorovarov, L. I. Rusin, A. V. Lomonsov, H. Chaforian, A. Hashemi and H. Novaseqhi, “Development of Uranium Extraction Technology from Phosphoric Acid Solutions with Extract,” In: Proceeding of International Conference on Uranium Extraction from Soil, Vol. 217, 2000, pp. 106-113.
- S. Rehman, N. Imtiaz, M. Faheem and Matiullah, “Determination of 238U Contentsin Ore Samples Using CR-39 Based Radon Dosimeter Disequilibrium Case,” Radiation Measurements, Vol. 41, 2006, pp. e471-e476.
- S. Righi, P. Lucialli and L. Bruzzi, “Health and Environmental Impacts of a Fertilizer Plant Part I: Assessment of Radioactive Pollution,” Journal of Environmental Radioactivity, Vol. 82, No. 2, 2005, pp. 167-182. doi:10.1016/j.jenvrad.2004.11.007
- A. G. E. Abbady, M. A. M. Uosif and A. El-Taher, “Natural Radioactivity and Dose Assessment for Phosphate Rocks from Wadi El-Mashash and El-Mahamid Mines, Egypt,” Journal of Environmental Radioactivity, Vol. 84, No. 1, 2005, pp. 65-78. doi:10.1016/j.jenvrad.2005.04.003
- E. M. Ashraf, Khater and H. A. AL-Sewaidan, “Radiation Exposure Due to Agricultural Uses of Phosphate Fertilizers,” Radiation Measurements, Vol. 43, No. 8, 2008, pp. 1402-1407. doi:10.1016/j.radmeas.2008.04.084
- N. C. Silva, E. Fernandes, M. Cipriani and M. Taddei, “The Natural Radioactivity of Brazilian Phosphogypsum,” Journal of Radioanalytical and Nuclear Chemistry, Vol. 249, No. 1, 2001, pp. 251-255. doi:10.1023/A:1013215215484
- A. El-Taher and S. S. Althoyaib, “Natural Radioactivity Levels and Heavy Metals in Chemical and Organic Fertilizers Used in Kingdom of Saudi Arabia,” Applied Radiation and Isotopes, Vol. 70, No. 1, 2012, pp. 290-295. doi:10.1016/j.apradiso.2011.08.010
- M. Gascoyne, “Geochemistry of the Actinides and Their Daughters,” In: M. Ivanovich and R. S. Harmon, Eds., Uranium Series Disequilibrium Applications to Earth, Marine and Environmental Science, Clarnandon Press, Oxford, 1992.
- B. Y. Lalit and T. V. Ramachandran, “Natural Radiation Environment,” 3rd Edition, Department of Energy, 1980, p. 800.
- N. Ibrahim, “Determination of Natural Radioactivity in Fertilizers Using Gamma Ray,” Spectroscopy Journal of Nuclear Physics and Chemistry, Vol. 51, No. 46, 1998, p. 621.