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Estimation of Annual Effective Dose Due to Ingestion of Natural Radionuclides in Cattle in Tin Mining Areas of Jos Plateau, Nigeria: Are Large Mammals Really Affected?

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DOI: 10.4236/ns.2015.74022    3,221 Downloads   3,771 Views   Citations

ABSTRACT

We have read with great interest the paper which was published in Natural Science, 2014 issue number 6 titled “Estimation of annual effective dose due to ingestion of natural radionuclides in cattle in tin mining area of Jos Plateau, Nigeria” [1]. The paper motivated us to use state-of-the-art computational technique to investigate the risks of the tin mining activity in Jos-Plateau, Nigeria on large mammals (e.g. cattle). The Tier 2 Erica Tool assessment was used to estimate the total dose rate and risk quotients of these reference terrestrial animals. Our investigation revealed that the expected and conservative risk quotients of large mammals due to internal and external exposure to enhanced level of radioactivity are 0.05 and 0.16, respectively. Since the risk quotients are less than unity, this indicates that there is less than 5% probability that the screen dose rate (10 μGyh1) is exceeded. The estimated total dose rate to large mammals is 0.52 μGyh1 which is not statistically significant. A critical analysis of [1] is presented in the introductory part of this paper.

Conflicts of Interest

The authors declare no conflicts of interest.

Cite this paper

Aliyu, A. , Mousseau, T. , Garba, N. , Abba, H. and Ramli, A. (2015) Estimation of Annual Effective Dose Due to Ingestion of Natural Radionuclides in Cattle in Tin Mining Areas of Jos Plateau, Nigeria: Are Large Mammals Really Affected?. Natural Science, 7, 190-196. doi: 10.4236/ns.2015.74022.

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