Studies of radioactivity and heavy metals in phosphate fertilizer

  • H. Hamamo
  • S. Landsberger
  • G. Harbottle
  • S. Panno
Application of Radioanalytical Techniques to Nuclear Safeguards and the Measurement of Environmental Radioactivity

Abstract

The enormous utilization of phosphate rock and super phosphate derived from it have the potential of being an important factor in the contamination of aquifers with alpha emitting radionuclides and heavy metals. Both rock phosphate and super phosphate contain substantial levels of natural uranium, amounting to hundreds of ppm. Our study has shown that whereas the uranium series in phosphate rock is nearly in secular equilibrium, in super phosphate the226Ra and its progeny are depleted by 60–70%. This is a result of the chemical processing of the rock phosphate. On the other hand the super phosphate is much more soluble and can be expected to release its radionuclides to the environment more rapidly than rock phosphate. The present study explores the release of radioisotopes and heavy metals from phosphate fertilizers. Extensive analytical use has been made of a germanium well-detector/Compton suppression system.

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Copyright information

© Akadémiai Kiadó 1995

Authors and Affiliations

  • H. Hamamo
    • 1
  • S. Landsberger
    • 1
  • G. Harbottle
    • 2
  • S. Panno
    • 3
  1. 1.Department of Nuclear EngineeringUniversity of Illinois 214 Nuclear Engineering LaboratoryUrbana(USA)
  2. 2.Chemistry DepartmentBrookhaven National LaboratoryUpton(USA)
  3. 3.Illinois State Geological SurveyChampaign(USA)

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