53
In mineral soils, the content of U mob varied in the range 4.1–15% of the total
uranium content in the soils. As in the case of U exch , the lowest portions of U mob
(4.1–4.6%) were found in loamy soils and the highest (6.2–15%) in sandy soils. The
sandy loam soils with portion of U mob 0.8–1.6% occupied intermediate position
between the loamy and the sandy soils.
In organic soils portion of U mob were 5.9–9.2%. The lowest portions of U mob were
found in peat-bog soil from P4 plot and maximum in peat-bog soil from P3 plot.
These soils differed significantly in the content of organic components in soil pore
solutions (OM sol ). Portion of ОM sol in the soil from the Р4 plot was ~0.2 wt. % and
in the soil from the P3 plot 2.1 wt. %.
Fig. 4 The portions of exchangeable uranium in the soil samples (U exch , %)
Fig. 5 The portions of mobile (conditionally biologically available) uranium in the soil samples
(U mob , %)
Uranium and Its Distribution in Typical Belarusian Soils
In mineral soils, the content of U mob varied in the range 4.1–15% of the total
uranium content in the soils. As in the case of U exch , the lowest portions of U mob
(4.1–4.6%) were found in loamy soils and the highest (6.2–15%) in sandy soils. The
sandy loam soils with portion of U mob 0.8–1.6% occupied intermediate position
between the loamy and the sandy soils.
In organic soils portion of U mob were 5.9–9.2%. The lowest portions of U mob were
found in peat-bog soil from P4 plot and maximum in peat-bog soil from P3 plot.
These soils differed significantly in the content of organic components in soil pore
solutions (OM sol ). Portion of ОM sol in the soil from the Р4 plot was ~0.2 wt. % and
in the soil from the P3 plot 2.1 wt. %.
Fig. 4 The portions of exchangeable uranium in the soil samples (U exch , %)
Fig. 5 The portions of mobile (conditionally biologically available) uranium in the soil samples
(U mob , %)
Uranium and Its Distribution in Typical Belarusian Soils