246
Tropical soils
bioavailability, 102, 104, 105
mineral colloids and organic complexes, 102
pathways, uranium, 101
redox conditions, 101
solubility of uranium, 102
soluble complexes, 102
vulnerable radioactive contamination, 101
U
238 U accumulation
agrocoenosis contamination, 114
anthropogenic sources, 115
average content, 114
behaviour of, 115–117, 119, 120
bicarbonate complex compounds, 114
biogenic migration, 120, 121, 123–126
environmental contamination, 114
(see also Fertilizers)
natural and climatic zone sequence, 114
uranium-organic compounds, 114
U/Th concentration ratio, 167, 169
Underground (UG) mining, 73
Uranium
applications, 151
environment, 151
history of (see History)
isotopes of, 2
naturally occurring nuclides, 2
radionuclides, 3
Uranium biokinetic models
concentrations, groundwater samples,
228, 231
doses to internal organs/tissues, 235, 238
excretion rates, 234
in groundwater, 218
groundwater and rocketing reports, health
risks, 228
human
Bernard and Struxness
model, 222
blood, 231
factors, 222
GI tract, 231
hair compartment model, 225
ICRP’s uranium systemic model,
223, 225
kidneys, 232
Lipsztein’s model, 223
liver, 231
OST, 232
radio elements and tissue and organ
dose, 222
skeleton, 232
urinary bladder, 232
Wrenn’s model, 223
human, uranium exposure, 218
in soil, 218
instrumentation, 228
time dependent alteration, 233
transfer coefficient, 233
Uranium Corporation of India Ltd
(UCIL), 84
Uranium mobile species (U mob )
air-dry soil samples, temperature
conditions, 58, 60
humidity effect, 62, 64
radiochemical analysis, 58
soil samples characteristics,
58, 59
water-saturated soil samples, temperature
conditions, 60, 61
W
Working level month (WLM), 28, 29
Wrenn’s model, 223
Index