E-catalog        

The migration and accumulation of nickel (nNi) and platinum (nPt) nanoparticles (NPs) in loamy sand and loamy soils (Luvisols) occupying the largest area in the southeastern part of West Siberia, have been investigated. The experiments were made in situ. The loamy sand soils (Albic Lamellic Luvisol) were tested down to a depth of 55 cm to sorb 100% nNi and at least 71% nPt of their total introduced amount. The rest 29% nPt either penetrated below the depth of 55 cm, or moved laterally. The experimental results in loamy soils enormously differed. Thus, only 16 to 20% nPt and 8 to 10 % nPt migrated radially in the Albic Luvisol and adjacent Stagnic Luvisol, respectively, while the rest NPs shifted laterally. The differences between the loamy soils are associated with lesser biogenic porosity of the Stagnic Luvisol, and, as a consequence, with higher density. The NPs migration and sorption processes are related to the soil properties differentiation. The inverse correlation between the concentration of nPt sorbed in soil horizons and their density with R2 = 0.67 has been established. NPs have shown high migrational ability with nNi to a lesser extent, and nPt to a larger extent. During a single introduction, these are able to penetrate depths of more than 1 m with both gravitational and capillary water.