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Related Experiment Videos

Radium-226 dose to a boy from playing on mill tailings.

C W Mays1, H F Lucas, R D Lloyd

  • 1Radiobiology Division, University of Utah, Salt Lake City 84112.

Health Physics
|August 1, 1991
PubMed
Summary
This summary is machine-generated.

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Childhood exposure to uranium mill tailings did not significantly increase radium-226 body burden. Leukemia development in one boy was unlikely linked to this low-level environmental radiation exposure.

Area of Science:

  • Environmental Health
  • Radiation Biology
  • Pediatric Oncology

Background:

  • Uranium mill tailings are a source of environmental radioactivity, including radium-226 (226Ra).
  • Childhood exposure to radioactive materials raises concerns about long-term health effects, such as leukemia.

Purpose of the Study:

  • To assess the body burden of 226Ra in an individual exposed during childhood to uranium mill tailings.
  • To estimate the radiation dose received by the exposed individual and a control subject.
  • To evaluate the potential link between childhood 226Ra exposure and leukemia development.

Main Methods:

  • In vivo whole-body counting and radon (Rn) breath analysis were used to measure 226Ra body burden.
  • Radiation doses to the skeleton and red marrow were calculated based on estimated 226Ra intake and retention.

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  • A control subject with no known exposure was included for comparison.

    • Main Results:

    • The 226Ra body burden of the exposed individual was not significantly different from the control subject.
    • Estimated radiation doses to the marrow-free skeleton were 0.9 mGy at age 14 and 2.1 mGy at age 38.
    • Alpha-particle dose to red marrow was estimated at 0.05 mGy (age 14) and 0.10 mGy (age 38).

    Conclusions:

    • Childhood exposure to uranium mill tailings resulted in low estimated radiation doses.
    • The observed leukemia in one exposed individual was unlikely to be caused by this level of 226Ra exposure.
    • These findings suggest that low-level environmental 226Ra exposure may not significantly increase leukemia risk.