Analysis of 238U, 226Ra, and 210Pb transfer factors from soil to the leaves of broadleaf tree species

This analysis of 238U, 226Ra and 210Pb transfer factors from the soil to leaves different native broadleaf trees at sites previously modified by uranium presence site background radioactivity levels, was conducted using data a few available studies literature. The tree species Quercus ilex, suber, Eucalyptus camaldulensis, pyrenaica, ilex rotundifolia, Populus sp. botryoides Sm. affected Tilia spp. Aesculus hippocastanum L. back ground were in cluded study regardless deciduous or evergreen origins leaves. In papers cited here, about basic parameters: pH, total Ca [gkg-1], sand [%], silt + clay [%] fractions also available. All collected activity concentration [Bqkg-1] dry weight (n=14) which range: 22-6606 for 38-7700 226Ra, 37-7500 210Pb, 2.7-137.6 238U (n=10), 2.6-134.2 (n=14), 27-77.2 indicated that it normally distributed after log-transformation. present under hypothesis biological differences between examined have lesser influence on investigated radionuclides compared impact parameters concentrations soil. Consequently, whether soil-to-leaves factor values average could be predicted statistically first approximation based their least one parameter multiple linear regression.