External and Internal Radiation Doses from Chemical Fertilisers  Used in Ibadan, Oyo State, Nigeria

External and Internal Radiation Doses from Chemical Fertilisers Used in Ibadan, Oyo State, Nigeria

B.U., Nwaka PhD (Environmental and Radiation Physics) M.Sc (Radiation and Health Physics) B.Sc (Physics/ Education) NCE (Physics/Chemistry)

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B.U.

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Nwaka

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N.N.

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Jibiri

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Alvan Ikoku Federal University of Education, Owerri

External and Internal Radiation Doses from Chemical Fertilisers Used in Ibadan, Oyo State, Nigeria

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Abstract

Absract-The knowledge of external and internal doses of radiation emitted from radionuclides contained in different chemical fertilizers sold in Ibadan, Nigeria is very important. Therefore, activity concentrations of 40K, 226Ra and 232Th radionuclides in Urea, NPK (15 -15 -15), NPK (16 -16 -16) and Single Super Phosphate (SSP) fertilizer brands sold in the area for agricultural purposes were determined using gamma-ray spectroscopy. Radium equivalent activity (Raeq), gamma radiation or representative index ( ), alpha index ( ), annual gonadal dose equivalent (AGDE), external exposure (D ext ) to gamma radiation as well as internal exposure (D int ) to doses of radiation to the marketers and users of the products were calculated. The calculated Ra eq for the four brands of chemical fertilizers were 80.90 , 295.95 , 293.93 and 706.17 respectively. External gamma doses were 0.60 6.73 , 6.65 and 13.00 while the sum of the internal doses due to inhalation and ingestion were found as 3.93 , 4.51 , 3.61 and 8.97 respectively. More external and internal doses of radiation were calculated for marketers of the products than farmers.

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Funding

No external funding was declared for this work.

Conflict of Interest

The authors declare no conflict of interest.

Ethical Approval

No ethics committee approval was required for this article type.

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How to Cite This Article

B.U., Nwaka. 2018. \u201cExternal and Internal Radiation Doses from Chemical Fertilisers Used in Ibadan, Oyo State, Nigeria\u201d. Global Journal of Science Frontier Research - A: Physics & Space Science GJSFR-A Volume 18 (GJSFR Volume 18 Issue A4).

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Journal Specifications

Crossref Journal DOI 10.17406/GJSFR

Print ISSN 0975-5896

e-ISSN 2249-4626

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GJSFR-A Classification FOR Code: 250604

Submission ReceivedApril 20, 2018
Peer Review Double Blind
Handling Editor
Accepted May 19, 2018
Published June 1, 2018

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v1.2

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July 5, 2018

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Total Score: 104

Country: Unknown

Subject: Global Journal of Science Frontier Research - A: Physics & Space Science

Authors: B.U., Nwaka, N.N., Jibiri (PhD/Dr. count: 0)

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