Natural Radioactivity Assessment of Kaolin and Gibbsite Rock Materials in Sinai, Egypt

نوع المستند : بحوث فی مجال المناهج وطرق التدریس

المؤلفون

المستخلص

The activity concentrations of 238U, 232Th, and 40K in the kaolin and gibbsite samples collected from various localities of Sinai, Egypt have been measured using the γ-ray spectroscopy technique. For each sample, various characterizing quantities such as Raeq, Hex, Hin, and Iγ values are calculated. All the values lie within the worldwide range. the dose rates of the most samples varies from 48.07 to 88.27 with average 46.21 which are agreement with the recommended limits (18-93 nGy h-1) except two samples are high called T.3.2 in EL Tih I location (201.04 nGy h-1 ) and M6 in Mussaba Salama ( 98.33 nGy h-1). The Chemical and mineralogy analysis show that the uranium concentration ranges from 2 to 18 PPm which are agreement with the recommended limits except M1 sample equals 44 PPm.and Fe2O3% ranges from 0.45 to 4.20 except one sample called T.3.2 equals 15.7% and AL2O3 ranges from 11.7 to 37.2 %. So it is desirable to used in industrial, where Kaolin and gibbsite is host several economic metal values. Which used in many important industries such as; paper industry, ceramics, refractory bricks, white cement, textiles, Rubber, medical industries, and special types of plastics.

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Adams, J.A.S. and Weaver, C.E., (1958): “Thorium to Uranium Ratios as Indicator for Sedimentary Processes; an Example of Geochemical Facies”. Am. Assoc. Pet. Geol. Bull., V. 42,                 pp. 397-430.
Ajayi, I.R. and Kuforiji, O.O. 2000, Natural Radioactivity Measurements in Rock Samples of Ondo and Ekiti States in Nigeria. Radiation Measurements, V. 33, pp. 13-16.
Beretka.  J.,And Mathew. P.J., 1985. Natural Radioactivity Of Australian building materials, Industrial Wastes And ByProducts, Health Physics Vol, 48, No. 1, P.P 87-95.
Curie, L.A., 1968. limits for qualitative detection and qauntitive determination. Anal. Chem..40, 586-593.
D. Malczewski, L. Teper, J. Dorda, 2004. Assessment of natural and anthropogenic radioactivity levels in rocks and soils in the environs of swieradow zdroj in sudetes, Poland, by in situ gamma-ray spectrometry. J. of environmental radioactivity (73)  233-245.
EL Aassy I.E., Ahmed, F.Y., El Sayed A.A., Ammar, F.E., and Mostafa, M.S., (2004): "Rare Earth Elements In Calcrete Profiles, South Western Sinai, Egypt". 6th Intern. Conf. On Geochemistry.Alex. University.Egypt.15-16 Sept. Pages:95-112.
EL Arabi, A.M.; Abbady, A.G.E. and Hussein, A.S. , 2006. Gamma-Ray Measurements of Natural Radioactivity in Sedimentary Rocks from Egypt. Nuclear Science and Techniques, V. 17, pp. 123-128.
El Galy, M.M.; El Mezayen, A.M.; Said, A.F, El Mowafy, A.A. and Mohamed, M.S., 2008. Distribution and Environmental Impacts of some Radionuclides in Sedimentary Rocks at Wadi Naseib Area, Southwest Sinai, Egypt. Env. Rad., V. 99, pp. 1075-1082.
El Hazek .M.N.; F.Y.Ahmed; M. A. EL Kassaby; R.M. Attia, 2008. Sulfuric acid leaching of polymetallic Abu Zenema gibbsite-shale, Hydrometallurgy 34-39.
 
 
El Shahat, A. and Kora, M. (1986): "Petrology of The Early Paleozoic Rocks of Um Bogma Area, Sinai"; Bulletin, Fac.Sc., Man Source Univ., V. 13(2).
Faanhof, A., (1999): "The measurement of natural radioactivity and the impact on humans".Česk. čas. Fys. 49,281-296.
Gehan Aly Mahammed Aly , 2005. Mineralogy, geochemistry and economic evaluation of some kaolin occurrences in Egypt. M. SC. Thesis, tanta university, Egypt.
Huy, N.Q., and Luyen, T.V, 2006. Study on external exposure poses from terrestrial radioactivity in Southern Vietnem. Journal of Radiation protection Dosimetry V.118, No.3,  P. 331-336.
Ibrahiem, N.M.; El-Ezaby,  B.; Nada, N.; Abd El-Makasoud, T.M. and Abd El-Azeem, S.N., 2000, Radioactivity Concentrations in Some Industrial Ores and their Waste Products by Gamma Spectrometry.The 7th Conference of Nuclear Physics and Applications, Cairo, pp. 6-10.
Krieger R. 1981. Radioactivity Of Construction Materials, Betonwerk Fertigteil Tech 47 P.P 468.
M. Ngachin, M.Garavaglia, c. Giovani, M.G. Kwato Njock, A. Nourreddine,2007. assessment of natural radioactivity and associated radiation hazards in some Cameroonian building materials. J. radiation measurements (42) 61-67. 
N.Walley EL-dine, A Sroor, A. EL-Shershaby, S.M. EL-Bahi, F.Ahmed,2004. radioactivity in local and imported kaolin types used in Egypt. J. Applied radiation and isotopes (60) 105-109.
Nada, A. ,2004. Gamma Spectroscopic Analysis for Estimation of Natural Radioactivity Levels in Some Granitic Rocks of Easter Desert, Egypt, Cairo. Arab Journal of Nuclear Science and Application, V. 37, No. 4, pp. 209-222.
Shaffer J. W., (1975): "Industrial mineral and rocks; American institute of mining, metallurgical and petroleum engineers", Inc. New York, N.Y.
Shaffer J. W., (1975): "Bauxitic raw materials; American institute of mining, metallurgical and petroleum engineers", Inc. New York, N.Y., p. 443-461.
 
Ş.Turhan, H Yücel, L,Gündüz, Ş. Şahin, M.Vural, A.Parmaksiz, B.Demircioglu, 2007.natural radioactivity measurement in pumic samples used raw materials in turkey. J Applied radiation and isotopes 65, 350-354.
Singh, S.; Rani, A. and Mahqian, R.K. , 2005. 226Ra, 232Th and 40K Analysis in Soil Samples from Some Areas of Punjab and Himachal Pradesh, India using Gamma Ray Spectrometry. Journal of Radiation Measurements, V. 39, pp. 431-439.
Tufail M., Ahmed N., Mirza S.M., Mirza N.M. and Khan H.A., 1992. Natural Radioactivity From The Building Materials Used in Islamabad and Rawalupind, Pakistan, J. Science. Of total environment .Vol.121 P.P 283-291.
Tufail, M.; Akhtar, N. and Waqas, M., 2005. Measurement of Terrestrial Radiation for Assessment of Gamma Dose from Cultivated and Barren Saline Soils of Faisalabad in Pakistan. Radiation Measurement, V. 41, pp. 443-451.
UNSCEAR, 1993. United Nations Scientific Committee on the Effect of Atomic Radiation “Sources and effects of Ionizing Radiation” Rept to General Assembly with scientific Annex. Vol-1 Sources United Nations New York.
UNSCEAR, 2000. United Nations Scientific Committee on the Effects of Atomic Radiation “Sources and effects of Ionizing Radiation” Rept to General Assembly with scientific Annex, United Nations,  New York.

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