Estimation of Natural Radioactivity in some Popular Drinks in Nigeria and its Radiological Effect

Author:

S.B. Ibikunle1

Affiliation:

1. Department of Physics, Federal University of Technology, P. M. B. 704, Akure, Ondo State. Nigeria

Abstract

The activity concentration on natural radionuclide in some samples of commonly consumed drinks have been determined using a gamma spectrometer, NaI detector. The mean activity concentration of 40K, 232Th, and 238U in the drink samples were estimated to be 23.76 ± 1.57, 1.55 ± 0.11, and 0.78 ± 0.16 Bq/L respectively. The mean effective dose equivalent of these natural radionuclides in food drinks are 5.77, 15.35, and 11.13 µSv/y respectively for 40K, 232Th, and 238U, while the mean total effective dose equivalent from all the natural radionuclides is 32.25 µSv/y. This value is less than the 0.1 mSv/y and 1 mSv/y recommendation of WHO and NCRP respectively for maximum permissible effective dose for public exposure. The excess lifetime cancer risk was estimated to be 1.13 x 10-4, which is lower than the world average. This is an indication that there is no significant cancer risk to humans as a result of the radionuclides consumption from these food drinks.

Publisher

Addaiyan International Publishers

Reference13 articles.

1. 1. Ahmed N. K. (2004). Natural Radioactivity of Ground and Drinking Water in Some Areas of Upper Egypt. Turk. J. Engng. Envw. Sci. 28: 345-354.

2. 2. FOS, (2013). Federal Office of Statistics Nigeria. Compilation of FOS/FAO annual consumption data/food balance sheet of Nigeria. A publication of Federal Office of Statistics (FOS), Nigeria.

3. 3. International Atomic Energy AgencyIAEA, 1989. IAEA/RCA. Regional Workshop on Environmental Sampling and Measurement of Radioactivity for Monitoring Purposes. Kalpakkum, Oct 9-12, pp. 85-92.

4. 4. International Atomic Energy Agency IAEA (1996) Basic safety Standards for Protection against ionizing Radiation and for the safety of radiation Sources, (Safety Series Number 115).

5. 5. International Commission on Radiological ProtectionICRP, (2012). Compendium of Dose Coefficients based on ICRP based on ICRP Publication 60. ICRP Publication 119 Annals of ICRP, 41 (Suppl.).

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