ANNUAL EFFECTIVE DOSE ESTIMATION DUE TO THE NATURAL RADIOACTIVITY IN YAM TUBERS (Dioscorea rotundata) CULTIVATED IN NORTHCENTRAL NIGERIA
Article Sidebar
Main Article Content
Abstract
Yam tubers (Dioscorea rotundata) and soil from commercially cultivated farmland in northcentral Nigeria were collected and investigated for their natural radioactivity content using a 3” × 3” NaI(Tl) gamma detector. Average activities of 238U, 232Th and 40K in the investigated farm soil were 38.13±3.76 Bq kg-1, 15.06±0.99 Bq kg-1 and 381.80±15.50 Bq kg-1, respectively. The results agree with the world’s acceptable levels of safety. Activities measured in the yam tubers were in the range from BDL -76.68±9.73 Bq kg-1 for 238U, BDL - 19.77±1.30 Bq kg-1 for 232Th and 312.50±20.73 - 627.94±38.37 Bq kg-1 for 40K, with average values of 29.23±4.0, 13.10±0.72 and 445.10±27.20 Bq kg-1, respectively. The total effective dose from radionuclide intake from yam ingestion fluctuated between 272.12 μSv y-1 and 935.97 μSv y-1. Correlation analysis identified 238U and 232Th as the leading contributors to the total effective dose from ingesting yam tubers cultivated in northcentral Nigeria.
Downloads
Article Details
Transfer of Copyrights
- In the event of publication of the manuscript entitled [INSERT MANUSCRIPT TITLE AND REF NO.] in the Malaysian Journal of Science, I hereby transfer copyrights of the manuscript title, abstract and contents to the Malaysian Journal of Science and the Faculty of Science, University of Malaya (as the publisher) for the full legal term of copyright and any renewals thereof throughout the world in any format, and any media for communication.
Conditions of Publication
- I hereby state that this manuscript to be published is an original work, unpublished in any form prior and I have obtained the necessary permission for the reproduction (or am the owner) of any images, illustrations, tables, charts, figures, maps, photographs and other visual materials of whom the copyrights is owned by a third party.
- This manuscript contains no statements that are contradictory to the relevant local and international laws or that infringes on the rights of others.
- I agree to indemnify the Malaysian Journal of Science and the Faculty of Science, University of Malaya (as the publisher) in the event of any claims that arise in regards to the above conditions and assume full liability on the published manuscript.
Reviewer’s Responsibilities
- Reviewers must treat the manuscripts received for reviewing process as confidential. It must not be shown or discussed with others without the authorization from the editor of MJS.
- Reviewers assigned must not have conflicts of interest with respect to the original work, the authors of the article or the research funding.
- Reviewers should judge or evaluate the manuscripts objective as possible. The feedback from the reviewers should be express clearly with supporting arguments.
- If the assigned reviewer considers themselves not able to complete the review of the manuscript, they must communicate with the editor, so that the manuscript could be sent to another suitable reviewer.
Copyright: Rights of the Author(s)
- Effective 2007, it will become the policy of the Malaysian Journal of Science (published by the Faculty of Science, University of Malaya) to obtain copyrights of all manuscripts published. This is to facilitate:
(a) Protection against copyright infringement of the manuscript through copyright breaches or piracy.
(b) Timely handling of reproduction requests from authorized third parties that are addressed directly to the Faculty of Science, University of Malaya. - As the author, you may publish the fore-mentioned manuscript, whole or any part thereof, provided acknowledgement regarding copyright notice and reference to first publication in the Malaysian Journal of Science and Faculty of Science, University of Malaya (as the publishers) are given.
You may produce copies of your manuscript, whole or any part thereof, for teaching purposes or to be provided, on individual basis, to fellow researchers. - You may include the fore-mentioned manuscript, whole or any part thereof, electronically on a secure network at your affiliated institution, provided acknowledgement regarding copyright notice and reference to first publication in the Malaysian Journal of Science and Faculty of Science, University of Malaya (as the publishers) are given.
- You may include the fore-mentioned manuscript, whole or any part thereof, on the World Wide Web, provided acknowledgement regarding copyright notice and reference to first publication in the Malaysian Journal of Science and Faculty of Science, University of Malaya (as the publishers) are given.
- In the event that your manuscript, whole or any part thereof, has been requested to be reproduced, for any purpose or in any form approved by the Malaysian Journal of Science and Faculty of Science, University of Malaya (as the publishers), you will be informed. It is requested that any changes to your contact details (especially e-mail addresses) are made known.
Copyright: Role and responsibility of the Author(s)
- In the event of the manuscript to be published in the Malaysian Journal of Science contains materials copyrighted to others prior, it is the responsibility of current author(s) to obtain written permission from the copyright owner or owners.
- This written permission should be submitted with the proof-copy of the manuscript to be published in the Malaysian Journal of Science
References
Adejuwon, C. (2002). Introduction to Crop Taxonomy, Anatomy and Physiology: Ibadan University Press, Nigeria.
Adesiji, N., & Ademola, J. (2019). Soil-to-maize Transfer Factor of Natural Radionuclides in a Tropical Ecosystem of Nigeria. Nigeria Journal of Pure and Applied Physics, 9(1), 6-10.
Asaduzzaman, K., Khandaker, M. U., Amin, Y. M., Bradley, D. A., Mahat, R. H., & Nor, R. M. (2014). Soil-to-root vegetable transfer factors for 226Ra, 232Th, 40K, and 88Y in Malaysia. Journal of Environmental Radioactivity, 135(0), 120-127.
FOS. (2006 ). 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.
Gregory, A. O., & Agbalagba, E. (2014). Assessment of natural radioactivity, associated radiological health hazards indices and soil-to-crop transfer factors in cultivated area around a fertilizer factory in Onne, Nigeria. Environmental earth sciences, 71(4), 1541-1549.
IAEA. (2010). Handbook of parameter values for the prediction of radionuclide transfer in terrestrial and freshwater environments. International Atomic Energy Agency, Vienna.
IARC. (2000). (International Agency for Research on Cancer). IARC Monographs on the evaluation of carcinogenic risks to humans. Ionizing Radiation, Part 1: x- and γ-radiations and neutrons, 75.
Ibitola, A., Gilbert, A. O., Ilori, A. O., Aremu, R., & Omosebi, I. (2018). Measurement of (40 K, 238 U and 232 Th) and associated dose rates in soil and commonly consumed foods (vegetables and tubers) at Okitipupa, Ondo State, Southwestern Nigeria. Asian Journal of Research and Reviews in Physics, 1(1), 1-11.
ICRP. (1994). Dose co-efficient for the intakes of radionuclides by workers. Pergamon Press, Oxford, ICRP Pub. No. 68.
ICRP. (1996). Age-dependent Doses to Members of the Public from intakes of radionuclides: Part 5. Compilation of Ingestion andInhalation Dose Co-efficients. Pergamon Press, Oxford, ICRP Pub. No. 72.
Jibiri, N., Farai, I., & Alausa, S. (2007). Estimation of annual effective dose due to natural radioactive elements in ingestion of foodstuffs in tin mining area of Jos-Plateau, Nigeria. Journal of Environmental Radioactivity, 94(1), 31-40.
Jibiri, N. N., & Abiodun, T. H. (2012). Effects of food diet preparation techniques on radionuclide intake and its implications for individual ingestion effective dose in Abeokuta, Southwestern Nigeria.
Jibiri, N. N., & Eke, B. C. (2021). Radionuclide contents in yam samples and health risks assessment in Oguta oil producing locality Imo State Nigeria. INTERNATIONAL JOURNAL, 2766, 2748.
Jwanbot, D., Izam, M., & Nyam, G. (2012). Radioactivity in some food crops from high background radiation area on the Jos-Plateau, Nigeria. Journal of Natural Sciences Research, 2(6), 76-78.
Khandaker, M. U., Jojo, P., Kassim, H., & Amin, Y. (2012). Radiometric analysis of construction materials using HPGe gamma-ray spectrometry. Radiation Protection Dosimetry, 152(1-3), 33-37.
Kolo, M., Aziz, S., Khandaker, M., Asaduzzaman, K., & Amin, Y. (2015). Evaluation of radiological risks due to natural radioactivity around Lynas Advanced Material Plant environment, Kuantan, Pahang, Malaysia. Environmental Science and Pollution Research, 22(17), 13127-13136.
Kolo, M. T., Gomina, M., Awojoyogbe, B., & Olarinoye, O. (2020). Artisanal Gold Mining Activity in Northcentral Nigeria and Its Implications: Radiological Approach. Journal of Nuclear Technology in Applied Science, 8(1), 97-111.
Nwankpa, A. C. (2017). Determination of food crops contamination in Osun State, Nigeria due to radium-226, thorium-232 and potassium-40 concentrations in the environment. European Journal of Sustainable Development, 6(4), 169-169.
Omoniyi, I. M., Oludare, S., & Oluwaseyi, O. M. (2013). Determination of radionuclides and elemental composition of clay soils by gamma-and X-ray spectrometry. Springerplus, 2(1), 1-11.
Ravisankar, R., Vanasundari, K., Suganya, M., Raghu, Y., Rajalakshmi, A., Chandrasekaran, A., Sivakumar, S., Chandramohan, J., Vijayagopal, P., & Venkatraman, B. (2014). Multivariate statistical analysis of radiological data of building materials used in Tiruvannamalai, Tamilnadu, India. Applied Radiation and Isotopes, 85(0), 114-127.
RIFE. (2005). Radioactivity in Food and Environment. The Centre for Environment, Fisheries and Aquaculture Science (CEFAS). 2004 Report, RIFE-10
Till, J. E., & Moore, R. E. (1988). A pathway analysis approach for determining acceptable levels of contamination of radionuclides in soil. Health Physics, 55(3), 541-548.
UNSCEAR. (2000). Sources and Effects of Ionizing Radiation. Report to General Assembly, with Scientific Annexes. United Nations, New York.