Low-level measurement of alpha-particle emitting nuclei in ceramics and lead |
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| Authors: | R J McDonald A R Smith D L Hurley E B Norman |
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| Institution: | (1) Savannah River Ecology Laboratory, Drawer E, 29802 Aiken, SC, USA;(2) Department of Environmental Chemistry, Washington State University, P.O. Box 644630, 99164-4630 Pullman, WA, USA |
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| Abstract: | The operationally defined bioavailable fraction from a commonly used sequential extraction (SE) procedure was compared to
biological availability represented by plant uptake of137Cs and90Sr. Experiments were conducted at two locations in the Ukraine and at several field locations on the Savannah River Site,
South Carolina. A significant regression existed between plant uptake and the ammonium acetate fraction (r
2=0.65), however, ratios of predicted uptake from the SE procedure to observed plant uptake ranged from 0.03 to 5.2 Data suggest
that SE procedure was useful for qualitative interpretations of biological availability but lacked sufficient rigor to be
useful for quantitative predictions. |
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