Trace elements in Al-Fe-humus podzolic soils subjected to aerial pollution from the copper-nickel production industry in conditions of varying lithogenic background

摘要

Data are presented on the concentration of Rb, Cs, Ag, Au, Sr, Ba, Zn, Cd, Sc, La, Ce, Nd, Sm, Eu, Gd, Tb, Yb, Th, U, Zr, Hf, As, Sb, V, Ta, Se, Cr, Mo, W, Co, Ni, Br, and Ir in Al-Fe-humus podzolic soils developing from different types of rocks andsubjected to different levels of aerial pollution from the copper and nickel production industry. The distribution of elements by the profiles of soils on Quaternary sediments has common patterns. Rare-earth elements, actinides, Rb, Cs, and Sc display an eluvial type of distribution, whereas Zr and Hf tend to accumulate in topmost mineral horizons. Biogenic accumulation was found for Cu, Ni, Co, Ag, Au, Se, Sb, and Ir. In polluted soils, the accumulation of these elements in organic horizons was particularly well displayed. Organic soil horizons are biogeochemical barriers for these elements in conditions of severe atmospheric pollution that, eventually, leads to the development of industrial barren lands. Owing to the barrier effect of organic horizons, the distribution of these elements in mineral soil horizons is fully controlled by the lithogenic factor.