caa a22 4500 469111879 CHVBK 20180323133113.0 cr unu---uuuuu 170328e19920101xx s 000 0 eng 10.1007/BF02038343 doi (NATIONALLICENCE)springer-10.1007/BF02038343 Comparative plant uptake and environmental behavior of U-series radionuclides at a uranium mine-mill [Elektronische Daten] [S. Ibrahim, F. Whicker] Concentrations of U, Th, Ra, Pb, and Po were determined in native vegetation and underlying substrate (soil and tailings) at various sites around a conventional open pit, acid leach uranium production operation in the Western United States. Radionuclide concentrations in substrate and vegetation were generally elevated above background at all sites disturbed by mining and milling activities. Observed plant/soil CR values for vegetation growing on exposed, weathered tailings were ordered as follows:238U>230Th>210Po,226Ra>210Pb. We suspect that in the case of sulfuric acid leached tailings, Ra and Pb are sequestered as sulfates, which are highly insoluble relative to U and Th sulfates, resulting in reduced availability for plant uptake. Soil acidity and the saturation condition at the tailings impoundment edge tend to enhance radionuclide availability for plant uptake. The transport of radionuclides to foliage and subsequent retention and absorption may play a role in plant contamination. Akadémiai Kiadó, 1992 Ibrahim S. Department of Radiology and Radiation Biology, Colorado State University, 80523, Fort Collins, Colorado, (USA) aut Whicker F. Department of Radiology and Radiation Biology, Colorado State University, 80523, Fort Collins, Colorado, (USA) aut Journal of Radioanalytical and Nuclear Chemistry Kluwer Academic Publishers 156/2(1992-01-01), 253-267 0236-5731 156:2<253 1992 156 10967 https://doi.org/10.1007/BF02038343 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF02038343 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Ibrahim S. Department of Radiology and Radiation Biology, Colorado State University, 80523, Fort Collins, Colorado, (USA) aut NATIONALLICENCE 700 1- Whicker F. Department of Radiology and Radiation Biology, Colorado State University, 80523, Fort Collins, Colorado, (USA) aut NATIONALLICENCE 773 0- Journal of Radioanalytical and Nuclear Chemistry Kluwer Academic Publishers 156/2(1992-01-01), 253-267 0236-5731 156:2<253 1992 156 10967 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer