Research Article Open Access

Potential Radiological Impacts of Phosphate Fertilizers Brands used in Southeast, Nigeria

Kenneth K. Agwu1, Mark C. Okeji1 and Paschal Tchokossa2
  • 1 University of Nigeria, Nigeria
  • 2 Obafemi Awolowo University, Nigeria
American Journal of Applied Sciences
Volume 14 No. 6, 2017, 632-635

DOI: https://doi.org/10.3844/ajassp.2017.632.635

Submitted On: 8 February 2017 Published On: 12 May 2017

How to Cite: Agwu, K. K., Okeji, M. C. & Tchokossa, P. (2017). Potential Radiological Impacts of Phosphate Fertilizers Brands used in Southeast, Nigeria. American Journal of Applied Sciences, 14(6), 632-635. https://doi.org/10.3844/ajassp.2017.632.635

Abstract

The radionuclides present in phosphate fertilizers used in Southeast Nigeria were identified and their activity concentration determined to assess the potential radiological impact on the environment due to fertilizer applications in agricultural farm lands. The radioactivity concentration of 226Ra, 232Th and 40K in the fertilizer samples range from 13.22±1.83 to 87.37±8.98 Bqkg-1 for 226Ra (mean: 31.71±5.4 Bqkg-1), 0.78±0.07 to 47.65±6.05 Bqkg-1 for 232Th (mean: 10.88±3.06) and 575.07±18.08 to 1234.80±36.61 Bqkg-1 for 40K (mean 876.91±20.03 Bqkg-1). The mean activity concentrations of the natural radionuclides of 226Ra and 232Th in the superphosphate fertilizer formulation were found to be above the world’s average. This will have potential health impact on humans if the fertilizers are applied in crops cultivation. The absorbed dose range from 31.01±0.03 to 75.11±0.49 nGyh-1 (mean: 68.66±0.35 nGyh-1). The super phosphate brand of fertilizer with the highest value of activity concentration has its value of annual effective dose as 0.08μ SvGyh-1.

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Keywords

  • Phosphate Fertilizer
  • Radioactivity
  • Radiological Impact
  • Nigeria