Title of article :
Radioactivity and heavy metal composition of Nigerian phosphate rocks: possible environmental implications
Author/Authors :
P. O. Ogunleye، نويسنده , , M. C. Mayaki، نويسنده , , I. Y. Amapu، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 2002
Pages :
10
From page :
39
To page :
48
Abstract :
Phosphate rock samples collected from the Dange Formation within the Sokoto basin were analyzed for trace element constituents using instrumental neutron activation analysis (INAA) and X-ray fluorescence analysis (XRFA) techniques, while natural activity concentrations due to 238U, 232Th, and 40K were determined by γ-ray spectrometry. The analytical results show that the average concentrations of some toxic elements (As, Sb, Cr, and Zn) in phosphate rocks are not appreciably different from that in agricultural soils. However the U and Th contents are enriched significantly in comparison. The results were used to assess the environmental toxicity of heavy metals and radiation hazard attributable to the direct application of phosphate rock as fertilizer.
Keywords :
environmental hazard , natural radioactivity , Heavy metals , phosphate rocks
Journal title :
Journal of Environmental Radioactivity
Serial Year :
2002
Journal title :
Journal of Environmental Radioactivity
Record number :
706107
Link To Document :
بازگشت