Fractionation of natural radionuclides in soils from a uranium mineralized area in the south-west of Spain

Distribution of natural radionuclides in surface soils in the vicinity of abandoned uranium mines in Serbia

“…About ten-fold higher values have been reported for uranium mining areas in Kyrgyzstan (Vandenhove et al 2006) and Colorado, United States (Rood et al 2008). Uranium concentrations in soils collected in the vicinity of abandoned uranium mines in Spain (Blanco et al 2005) and Australia (Hancock et al 2006) were found to be about 30-fold higher than uranium concentrations obtained in this study.…”

Radioecological characterization of a uranium mining site located in a semi-arid region in Brazil

“…So, if there is a removal of 210 Pb from the Poços de Caldas soils, then this indicates that the particles to which the 210 Pb is bound have been removed, likely by erosion, what is also in good agreement with the higher precipitation rates observed at the Poços de Caldas region. Blanco et al (2005) presented results of natural radionuclides in soil and plants of a mineralized uranium area in southwestern Spain. In the non-affected area of the former uranium mining activities, the average activity concentrations of 238 U, 226 Ra, 232 Th and 228 Ra were 178 AE 58; 303 AE 45; 28 AE 39 and 39 AE 12, respectively.…”

Monitoring of microbial metal transformations in the environment

“…An attempt is then made to correlate the presence of the metal in a given extract to the chemical form of that metal in situ. Despite the fact that the weaknesses of this approach were recognized early on, variations of this method are still in broad use today [34,35]. For a comprehensive review regarding the vast array of sequential extraction protocols and reagents see Filgueiras et al [36].…”